Koss BT539i User manual

Koss BT539i
BT539i
FRONT
Blue (solid)
Charger Connected,
Fully Charged
Red (solid)
Charger Connected,
Charging
Blue & Red (flashing)
Bluetooth Discovery Mode
Blue (flashing)
Paired
Red (flashing)
Low Battery
Blue (solid)
Fully Charged
Red (solid)
Charging
AUDIO OUT AUDIO IN
BACK
= Dieline
= Fold Lines
Scale = 1:1
changes or modications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment o and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
1-YEAR LIMITED WARRANTY
KOSS, KOSS and Design, THE SOUND OF KOSS, and HEARING IS BELIEVING are Registered in
U.S. Patent and Trademark Office and are trademarks of Koss Corporation in other countries.
Koss Corporation • 4129 N. Port Washington Ave.
Milwaukee, WI 53212 / USA • 1-800-USA-KOSS (1-800-872-5677)
Koss-UK Ltd., Registered Office Address
One New Change, London, EC4M 9AF / UK
For warranty information visit www.koss.com.
This device complies with part 15 of the FCC rules and Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.
Please read these safety warnings carefully to ensure your personal safety and prevent property damage.
- Do not leave your devices in close proximity to open ames or extreme sources of heat.
- Do not expose your devices to liquid or extreme humidity.
- Do not drop, disassemble, microwave, incinerate or paint your devices.
- Do not expose your devices to extreme high or low temperatures.
- Clean your devices with a clean, dry cloth.
- Do not leave your devices in direct sunlight for an extended period of time.
- Do not dispose of your devices in a re. The battery could explode causing injury or death.
- Do not attempt to clean your devices while they are being charged.
- Only charge your devices with the components supplied with the devices.
- Do not attempt to disable the devices, chargers or cables or force open the built-in battery.
- Do not charge your devices in damp areas or in extreme high or low temperatures.
- Do not leave or store the devices or any of their accessories near or over your automobile’s airbags, because serious injury may result
when an airbag deploys.
WARNING
!Bluetooth Headset
Model: Koss BT539i
Input: 5V , 160mA
FCC ID: L76-BT539I
I
Battery Capacity: 240mAh, 0.89Wh
IC: 10021A-BT539I
CMIIT ID: 2016DJ2325
S/N: BT000001A
Koss Corportation Made in China
0
7
0
0
CE Warning
Listen at moderate volumes to avoid hearing damage.
This equipment is in compliance with the essential requirements and other
relevant provisions of Directive 2014/53/EU.
Product features and specifications are subject to change without notice. Product may vary from images shown.
To enter Bluetooth discovery mode, from an off
state, depress and hold the center button until
light flashes red and blue.
red & blue (flashing)
Next Track
Previous Track
Vol Down
Vol Up
Play / Pause /
Power On / Power Off /
Answer Call / Hang Up Call /
Pairing Mode
USB Charging
Indicator Light
Audio In Microphone
Available Devices
Bluetooth Settings
Select “Koss BT539i” on transmitting
device to pair
Wired Listening Light Language
Charging Controls Ports
Bluetooth Discovery Mode

Koss BT539i
BT539i
FRONT
Blue (solid)
Charger Connected,
Fully Charged
Red (solid)
Charger Connected,
Charging
Blue & Red (flashing)
Bluetooth Discovery Mode
Blue (flashing)
Paired
Red (flashing)
Low Battery
Blue (solid)
Fully Charged
Red (solid)
Charging
AUDIO OUT AUDIO IN
BACK
= Dieline
= Fold Lines
Scale = 1:1
changes or modications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment o and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
1-YEAR LIMITED WARRANTY
KOSS, KOSS and Design, THE SOUND OF KOSS, and HEARING IS BELIEVING are Registered in
U.S. Patent and Trademark Office and are trademarks of Koss Corporation in other countries.
Koss Corporation • 4129 N. Port Washington Ave.
Milwaukee, WI 53212 / USA • 1-800-USA-KOSS (1-800-872-5677)
Koss-UK Ltd., Registered Office Address
One New Change, London, EC4M 9AF / UK
For warranty information visit www.koss.com.
This device complies with part 15 of the FCC rules and Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.
Please read these safety warnings carefully to ensure your personal safety and prevent property damage.
- Do not leave your devices in close proximity to open ames or extreme sources of heat.
- Do not expose your devices to liquid or extreme humidity.
- Do not drop, disassemble, microwave, incinerate or paint your devices.
- Do not expose your devices to extreme high or low temperatures.
- Clean your devices with a clean, dry cloth.
- Do not leave your devices in direct sunlight for an extended period of time.
- Do not dispose of your devices in a re. The battery could explode causing injury or death.
- Do not attempt to clean your devices while they are being charged.
- Only charge your devices with the components supplied with the devices.
- Do not attempt to disable the devices, chargers or cables or force open the built-in battery.
- Do not charge your devices in damp areas or in extreme high or low temperatures.
- Do not leave or store the devices or any of their accessories near or over your automobile’s airbags, because serious injury may result
when an airbag deploys.
WARNING
!Bluetooth Headset
Model: Koss BT539i
Input: 5V , 160mA
FCC ID: L76-BT539I
I
Battery Capacity: 240mAh, 0.89Wh
IC: 10021A-BT539I
CMIIT ID: 2016DJ2325
S/N: BT000001A
Koss Corportation Made in China
0
7
0
0
CE Warning
Listen at moderate volumes to avoid hearing damage.
This equipment is in compliance with the essential requirements and other
relevant provisions of Directive 2014/53/EU.
Product features and specifications are subject to change without notice. Product may vary from images shown.
To enter Bluetooth discovery mode, from an off
state, depress and hold the center button until
light flashes red and blue.
red & blue (flashing)
Next Track
Previous Track
Vol Down
Vol Up
Play / Pause /
Power On / Power Off /
Answer Call / Hang Up Call /
Pairing Mode
USB Charging
Indicator Light
Audio In Microphone
Available Devices
Bluetooth Settings
Select “Koss BT539i” on transmitting
device to pair
Wired Listening Light Language
Charging Controls Ports
Bluetooth Discovery Mode

Koss BT539i
BT539i
FRONT
Blue (solid)
Charger Connected,
Fully Charged
Red (solid)
Charger Connected,
Charging
Blue & Red (flashing)
Bluetooth Discovery Mode
Blue (flashing)
Paired
Red (flashing)
Low Battery
Blue (solid)
Fully Charged
Red (solid)
Charging
AUDIO OUT AUDIO IN
BACK
= Dieline
= Fold Lines
Scale = 1:1
changes or modications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment o and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
1-YEAR LIMITED WARRANTY
KOSS, KOSS and Design, THE SOUND OF KOSS, and HEARING IS BELIEVING are Registered in
U.S. Patent and Trademark Office and are trademarks of Koss Corporation in other countries.
Koss Corporation • 4129 N. Port Washington Ave.
Milwaukee, WI 53212 / USA • 1-800-USA-KOSS (1-800-872-5677)
Koss-UK Ltd., Registered Office Address
One New Change, London, EC4M 9AF / UK
For warranty information visit www.koss.com.
This device complies with part 15 of the FCC rules and Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.
Please read these safety warnings carefully to ensure your personal safety and prevent property damage.
- Do not leave your devices in close proximity to open ames or extreme sources of heat.
- Do not expose your devices to liquid or extreme humidity.
- Do not drop, disassemble, microwave, incinerate or paint your devices.
- Do not expose your devices to extreme high or low temperatures.
- Clean your devices with a clean, dry cloth.
- Do not leave your devices in direct sunlight for an extended period of time.
- Do not dispose of your devices in a re. The battery could explode causing injury or death.
- Do not attempt to clean your devices while they are being charged.
- Only charge your devices with the components supplied with the devices.
- Do not attempt to disable the devices, chargers or cables or force open the built-in battery.
- Do not charge your devices in damp areas or in extreme high or low temperatures.
- Do not leave or store the devices or any of their accessories near or over your automobile’s airbags, because serious injury may result
when an airbag deploys.
WARNING
!Bluetooth Headset
Model: Koss BT539i
Input: 5V , 160mA
FCC ID: L76-BT539I
I
Battery Capacity: 240mAh, 0.89Wh
IC: 10021A-BT539I
CMIIT ID: 2016DJ2325
S/N: BT000001A
Koss Corportation Made in China
0
7
0
0
CE Warning
Listen at moderate volumes to avoid hearing damage.
This equipment is in compliance with the essential requirements and other
relevant provisions of Directive 2014/53/EU.
Product features and specifications are subject to change without notice. Product may vary from images shown.
To enter Bluetooth discovery mode, from an off
state, depress and hold the center button until
light flashes red and blue.
red & blue (flashing)
Next Track
Previous Track
Vol Down
Vol Up
Play / Pause /
Power On / Power Off /
Answer Call / Hang Up Call /
Pairing Mode
USB Charging
Indicator Light
Audio In Microphone
Available Devices
Bluetooth Settings
Select “Koss BT539i” on transmitting
device to pair
Wired Listening Light Language
Charging Controls Ports
Bluetooth Discovery Mode

Koss BT539i
BT539i
FRONT
Blue (solid)
Charger Connected,
Fully Charged
Red (solid)
Charger Connected,
Charging
Blue & Red (flashing)
Bluetooth Discovery Mode
Blue (flashing)
Paired
Red (flashing)
Low Battery
Blue (solid)
Fully Charged
Red (solid)
Charging
AUDIO OUT AUDIO IN
BACK
= Dieline
= Fold Lines
Scale = 1:1
changes or modications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment o and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
1-YEAR LIMITED WARRANTY
KOSS, KOSS and Design, THE SOUND OF KOSS, and HEARING IS BELIEVING are Registered in
U.S. Patent and Trademark Office and are trademarks of Koss Corporation in other countries.
Koss Corporation • 4129 N. Port Washington Ave.
Milwaukee, WI 53212 / USA • 1-800-USA-KOSS (1-800-872-5677)
Koss-UK Ltd., Registered Office Address
One New Change, London, EC4M 9AF / UK
For warranty information visit www.koss.com.
This device complies with part 15 of the FCC rules and Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.
Please read these safety warnings carefully to ensure your personal safety and prevent property damage.
- Do not leave your devices in close proximity to open ames or extreme sources of heat.
- Do not expose your devices to liquid or extreme humidity.
- Do not drop, disassemble, microwave, incinerate or paint your devices.
- Do not expose your devices to extreme high or low temperatures.
- Clean your devices with a clean, dry cloth.
- Do not leave your devices in direct sunlight for an extended period of time.
- Do not dispose of your devices in a re. The battery could explode causing injury or death.
- Do not attempt to clean your devices while they are being charged.
- Only charge your devices with the components supplied with the devices.
- Do not attempt to disable the devices, chargers or cables or force open the built-in battery.
- Do not charge your devices in damp areas or in extreme high or low temperatures.
- Do not leave or store the devices or any of their accessories near or over your automobile’s airbags, because serious injury may result
when an airbag deploys.
WARNING
!Bluetooth Headset
Model: Koss BT539i
Input: 5V , 160mA
FCC ID: L76-BT539I
I
Battery Capacity: 240mAh, 0.89Wh
IC: 10021A-BT539I
CMIIT ID: 2016DJ2325
S/N: BT000001A
Koss Corportation Made in China
0
7
0
0
CE Warning
Listen at moderate volumes to avoid hearing damage.
This equipment is in compliance with the essential requirements and other
relevant provisions of Directive 2014/53/EU.
Product features and specifications are subject to change without notice. Product may vary from images shown.
To enter Bluetooth discovery mode, from an off
state, depress and hold the center button until
light flashes red and blue.
red & blue (flashing)
Next Track
Previous Track
Vol Down
Vol Up
Play / Pause /
Power On / Power Off /
Answer Call / Hang Up Call /
Pairing Mode
USB Charging
Indicator Light
Audio In Microphone
Available Devices
Bluetooth Settings
Select “Koss BT539i” on transmitting
device to pair
Wired Listening Light Language
Charging Controls Ports
Bluetooth Discovery Mode

Koss BT539i
BT539i
FRONT
Blue (solid)
Charger Connected,
Fully Charged
Red (solid)
Charger Connected,
Charging
Blue & Red (flashing)
Bluetooth Discovery Mode
Blue (flashing)
Paired
Red (flashing)
Low Battery
Blue (solid)
Fully Charged
Red (solid)
Charging
AUDIO OUT AUDIO IN
BACK
= Dieline
= Fold Lines
Scale = 1:1
changes or modications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment o and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
1-YEAR LIMITED WARRANTY
KOSS, KOSS and Design, THE SOUND OF KOSS, and HEARING IS BELIEVING are Registered in
U.S. Patent and Trademark Office and are trademarks of Koss Corporation in other countries.
Koss Corporation • 4129 N. Port Washington Ave.
Milwaukee, WI 53212 / USA • 1-800-USA-KOSS (1-800-872-5677)
Koss-UK Ltd., Registered Office Address
One New Change, London, EC4M 9AF / UK
For warranty information visit www.koss.com.
This device complies with part 15 of the FCC rules and Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.
Please read these safety warnings carefully to ensure your personal safety and prevent property damage.
- Do not leave your devices in close proximity to open ames or extreme sources of heat.
- Do not expose your devices to liquid or extreme humidity.
- Do not drop, disassemble, microwave, incinerate or paint your devices.
- Do not expose your devices to extreme high or low temperatures.
- Clean your devices with a clean, dry cloth.
- Do not leave your devices in direct sunlight for an extended period of time.
- Do not dispose of your devices in a re. The battery could explode causing injury or death.
- Do not attempt to clean your devices while they are being charged.
- Only charge your devices with the components supplied with the devices.
- Do not attempt to disable the devices, chargers or cables or force open the built-in battery.
- Do not charge your devices in damp areas or in extreme high or low temperatures.
- Do not leave or store the devices or any of their accessories near or over your automobile’s airbags, because serious injury may result
when an airbag deploys.
WARNING
!Bluetooth Headset
Model: Koss BT539i
Input: 5V , 160mA
FCC ID: L76-BT539I
I
Battery Capacity: 240mAh, 0.89Wh
IC: 10021A-BT539I
CMIIT ID: 2016DJ2325
S/N: BT000001A
Koss Corportation Made in China
0
7
0
0
CE Warning
Listen at moderate volumes to avoid hearing damage.
This equipment is in compliance with the essential requirements and other
relevant provisions of Directive 2014/53/EU.
Product features and specifications are subject to change without notice. Product may vary from images shown.
To enter Bluetooth discovery mode, from an off
state, depress and hold the center button until
light flashes red and blue.
red & blue (flashing)
Next Track
Previous Track
Vol Down
Vol Up
Play / Pause /
Power On / Power Off /
Answer Call / Hang Up Call /
Pairing Mode
USB Charging
Indicator Light
Audio In Microphone
Available Devices
Bluetooth Settings
Select “Koss BT539i” on transmitting
device to pair
Wired Listening Light Language
Charging Controls Ports
Bluetooth Discovery Mode

Koss BT539i
BT539i
FRONT
Blue (solid)
Charger Connected,
Fully Charged
Red (solid)
Charger Connected,
Charging
Blue & Red (flashing)
Bluetooth Discovery Mode
Blue (flashing)
Paired
Red (flashing)
Low Battery
Blue (solid)
Fully Charged
Red (solid)
Charging
AUDIO OUT AUDIO IN
BACK
= Dieline
= Fold Lines
Scale = 1:1
changes or modications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment o and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
1-YEAR LIMITED WARRANTY
KOSS, KOSS and Design, THE SOUND OF KOSS, and HEARING IS BELIEVING are Registered in
U.S. Patent and Trademark Office and are trademarks of Koss Corporation in other countries.
Koss Corporation • 4129 N. Port Washington Ave.
Milwaukee, WI 53212 / USA • 1-800-USA-KOSS (1-800-872-5677)
Koss-UK Ltd., Registered Office Address
One New Change, London, EC4M 9AF / UK
For warranty information visit www.koss.com.
This device complies with part 15 of the FCC rules and Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.
Please read these safety warnings carefully to ensure your personal safety and prevent property damage.
- Do not leave your devices in close proximity to open ames or extreme sources of heat.
- Do not expose your devices to liquid or extreme humidity.
- Do not drop, disassemble, microwave, incinerate or paint your devices.
- Do not expose your devices to extreme high or low temperatures.
- Clean your devices with a clean, dry cloth.
- Do not leave your devices in direct sunlight for an extended period of time.
- Do not dispose of your devices in a re. The battery could explode causing injury or death.
- Do not attempt to clean your devices while they are being charged.
- Only charge your devices with the components supplied with the devices.
- Do not attempt to disable the devices, chargers or cables or force open the built-in battery.
- Do not charge your devices in damp areas or in extreme high or low temperatures.
- Do not leave or store the devices or any of their accessories near or over your automobile’s airbags, because serious injury may result
when an airbag deploys.
WARNING
!Bluetooth Headset
Model: Koss BT539i
Input: 5V , 160mA
FCC ID: L76-BT539I
I
Battery Capacity: 240mAh, 0.89Wh
IC: 10021A-BT539I
CMIIT ID: 2016DJ2325
S/N: BT000001A
Koss Corportation Made in China
0
7
0
0
CE Warning
Listen at moderate volumes to avoid hearing damage.
This equipment is in compliance with the essential requirements and other
relevant provisions of Directive 2014/53/EU.
Product features and specifications are subject to change without notice. Product may vary from images shown.
To enter Bluetooth discovery mode, from an off
state, depress and hold the center button until
light flashes red and blue.
red & blue (flashing)
Next Track
Previous Track
Vol Down
Vol Up
Play / Pause /
Power On / Power Off /
Answer Call / Hang Up Call /
Pairing Mode
USB Charging
Indicator Light
Audio In Microphone
Available Devices
Bluetooth Settings
Select “Koss BT539i” on transmitting
device to pair
Wired Listening Light Language
Charging Controls Ports
Bluetooth Discovery Mode

Koss BT539i
BT539i
FRONT
Blue (solid)
Charger Connected,
Fully Charged
Red (solid)
Charger Connected,
Charging
Blue & Red (flashing)
Bluetooth Discovery Mode
Blue (flashing)
Paired
Red (flashing)
Low Battery
Blue (solid)
Fully Charged
Red (solid)
Charging
AUDIO OUT AUDIO IN
BACK
= Dieline
= Fold Lines
Scale = 1:1
changes or modications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment o and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
1-YEAR LIMITED WARRANTY
KOSS, KOSS and Design, THE SOUND OF KOSS, and HEARING IS BELIEVING are Registered in
U.S. Patent and Trademark Office and are trademarks of Koss Corporation in other countries.
Koss Corporation • 4129 N. Port Washington Ave.
Milwaukee, WI 53212 / USA • 1-800-USA-KOSS (1-800-872-5677)
Koss-UK Ltd., Registered Office Address
One New Change, London, EC4M 9AF / UK
For warranty information visit www.koss.com.
This device complies with part 15 of the FCC rules and Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.
Please read these safety warnings carefully to ensure your personal safety and prevent property damage.
- Do not leave your devices in close proximity to open ames or extreme sources of heat.
- Do not expose your devices to liquid or extreme humidity.
- Do not drop, disassemble, microwave, incinerate or paint your devices.
- Do not expose your devices to extreme high or low temperatures.
- Clean your devices with a clean, dry cloth.
- Do not leave your devices in direct sunlight for an extended period of time.
- Do not dispose of your devices in a re. The battery could explode causing injury or death.
- Do not attempt to clean your devices while they are being charged.
- Only charge your devices with the components supplied with the devices.
- Do not attempt to disable the devices, chargers or cables or force open the built-in battery.
- Do not charge your devices in damp areas or in extreme high or low temperatures.
- Do not leave or store the devices or any of their accessories near or over your automobile’s airbags, because serious injury may result
when an airbag deploys.
WARNING
!Bluetooth Headset
Model: Koss BT539i
Input: 5V , 160mA
FCC ID: L76-BT539I
I
Battery Capacity: 240mAh, 0.89Wh
IC: 10021A-BT539I
CMIIT ID: 2016DJ2325
S/N: BT000001A
Koss Corportation Made in China
0
7
0
0
CE Warning
Listen at moderate volumes to avoid hearing damage.
This equipment is in compliance with the essential requirements and other
relevant provisions of Directive 2014/53/EU.
Product features and specifications are subject to change without notice. Product may vary from images shown.
To enter Bluetooth discovery mode, from an off
state, depress and hold the center button until
light flashes red and blue.
red & blue (flashing)
Next Track
Previous Track
Vol Down
Vol Up
Play / Pause /
Power On / Power Off /
Answer Call / Hang Up Call /
Pairing Mode
USB Charging
Indicator Light
Audio In Microphone
Available Devices
Bluetooth Settings
Select “Koss BT539i” on transmitting
device to pair
Wired Listening Light Language
Charging Controls Ports
Bluetooth Discovery Mode

Koss BT539i
BT539i
FRONT
Blue (solid)
Charger Connected,
Fully Charged
Red (solid)
Charger Connected,
Charging
Blue & Red (flashing)
Bluetooth Discovery Mode
Blue (flashing)
Paired
Red (flashing)
Low Battery
Blue (solid)
Fully Charged
Red (solid)
Charging
AUDIO OUT AUDIO IN
BACK
= Dieline
= Fold Lines
Scale = 1:1
changes or modications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment o and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
1-YEAR LIMITED WARRANTY
KOSS, KOSS and Design, THE SOUND OF KOSS, and HEARING IS BELIEVING are Registered in
U.S. Patent and Trademark Office and are trademarks of Koss Corporation in other countries.
Koss Corporation • 4129 N. Port Washington Ave.
Milwaukee, WI 53212 / USA • 1-800-USA-KOSS (1-800-872-5677)
Koss-UK Ltd., Registered Office Address
One New Change, London, EC4M 9AF / UK
For warranty information visit www.koss.com.
This device complies with part 15 of the FCC rules and Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.
Please read these safety warnings carefully to ensure your personal safety and prevent property damage.
- Do not leave your devices in close proximity to open ames or extreme sources of heat.
- Do not expose your devices to liquid or extreme humidity.
- Do not drop, disassemble, microwave, incinerate or paint your devices.
- Do not expose your devices to extreme high or low temperatures.
- Clean your devices with a clean, dry cloth.
- Do not leave your devices in direct sunlight for an extended period of time.
- Do not dispose of your devices in a re. The battery could explode causing injury or death.
- Do not attempt to clean your devices while they are being charged.
- Only charge your devices with the components supplied with the devices.
- Do not attempt to disable the devices, chargers or cables or force open the built-in battery.
- Do not charge your devices in damp areas or in extreme high or low temperatures.
- Do not leave or store the devices or any of their accessories near or over your automobile’s airbags, because serious injury may result
when an airbag deploys.
WARNING
!Bluetooth Headset
Model: Koss BT539i
Input: 5V , 160mA
FCC ID: L76-BT539I
I
Battery Capacity: 240mAh, 0.89Wh
IC: 10021A-BT539I
CMIIT ID: 2016DJ2325
S/N: BT000001A
Koss Corportation Made in China
0
7
0
0
CE Warning
Listen at moderate volumes to avoid hearing damage.
This equipment is in compliance with the essential requirements and other
relevant provisions of Directive 2014/53/EU.
Product features and specifications are subject to change without notice. Product may vary from images shown.
To enter Bluetooth discovery mode, from an off
state, depress and hold the center button until
light flashes red and blue.
red & blue (flashing)
Next Track
Previous Track
Vol Down
Vol Up
Play / Pause /
Power On / Power Off /
Answer Call / Hang Up Call /
Pairing Mode
USB Charging
Indicator Light
Audio In Microphone
Available Devices
Bluetooth Settings
Select “Koss BT539i” on transmitting
device to pair
Wired Listening Light Language
Charging Controls Ports
Bluetooth Discovery Mode

Koss BT539i
BT539i
FRONT
Blue (solid)
Charger Connected,
Fully Charged
Red (solid)
Charger Connected,
Charging
Blue & Red (flashing)
Bluetooth Discovery Mode
Blue (flashing)
Paired
Red (flashing)
Low Battery
Blue (solid)
Fully Charged
Red (solid)
Charging
AUDIO OUT AUDIO IN
BACK
= Dieline
= Fold Lines
Scale = 1:1
changes or modications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment o and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
1-YEAR LIMITED WARRANTY
KOSS, KOSS and Design, THE SOUND OF KOSS, and HEARING IS BELIEVING are Registered in
U.S. Patent and Trademark Office and are trademarks of Koss Corporation in other countries.
Koss Corporation • 4129 N. Port Washington Ave.
Milwaukee, WI 53212 / USA • 1-800-USA-KOSS (1-800-872-5677)
Koss-UK Ltd., Registered Office Address
One New Change, London, EC4M 9AF / UK
For warranty information visit www.koss.com.
This device complies with part 15 of the FCC rules and Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.
Please read these safety warnings carefully to ensure your personal safety and prevent property damage.
- Do not leave your devices in close proximity to open ames or extreme sources of heat.
- Do not expose your devices to liquid or extreme humidity.
- Do not drop, disassemble, microwave, incinerate or paint your devices.
- Do not expose your devices to extreme high or low temperatures.
- Clean your devices with a clean, dry cloth.
- Do not leave your devices in direct sunlight for an extended period of time.
- Do not dispose of your devices in a re. The battery could explode causing injury or death.
- Do not attempt to clean your devices while they are being charged.
- Only charge your devices with the components supplied with the devices.
- Do not attempt to disable the devices, chargers or cables or force open the built-in battery.
- Do not charge your devices in damp areas or in extreme high or low temperatures.
- Do not leave or store the devices or any of their accessories near or over your automobile’s airbags, because serious injury may result
when an airbag deploys.
WARNING
!Bluetooth Headset
Model: Koss BT539i
Input: 5V , 160mA
FCC ID: L76-BT539I
I
Battery Capacity: 240mAh, 0.89Wh
IC: 10021A-BT539I
CMIIT ID: 2016DJ2325
S/N: BT000001A
Koss Corportation Made in China
0
7
0
0
CE Warning
Listen at moderate volumes to avoid hearing damage.
This equipment is in compliance with the essential requirements and other
relevant provisions of Directive 2014/53/EU.
Product features and specifications are subject to change without notice. Product may vary from images shown.
To enter Bluetooth discovery mode, from an off
state, depress and hold the center button until
light flashes red and blue.
red & blue (flashing)
Next Track
Previous Track
Vol Down
Vol Up
Play / Pause /
Power On / Power Off /
Answer Call / Hang Up Call /
Pairing Mode
USB Charging
Indicator Light
Audio In Microphone
Available Devices
Bluetooth Settings
Select “Koss BT539i” on transmitting
device to pair
Wired Listening Light Language
Charging Controls Ports
Bluetooth Discovery Mode

Koss BT539i
BT539i
FRONT
Blue (solid)
Charger Connected,
Fully Charged
Red (solid)
Charger Connected,
Charging
Blue & Red (flashing)
Bluetooth Discovery Mode
Blue (flashing)
Paired
Red (flashing)
Low Battery
Blue (solid)
Fully Charged
Red (solid)
Charging
AUDIO OUT AUDIO IN
BACK
= Dieline
= Fold Lines
Scale = 1:1
changes or modications not expressly approved by the party responsible for compliance could void the user’s authority
to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment o and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver.
-- Connect the equipment into an outlet on a circuit dierent from that to which the receiver is connected.
-- Consult the dealer or an experienced radio/TV technician for help.
1-YEAR LIMITED WARRANTY
KOSS, KOSS and Design, THE SOUND OF KOSS, and HEARING IS BELIEVING are Registered in
U.S. Patent and Trademark Office and are trademarks of Koss Corporation in other countries.
Koss Corporation • 4129 N. Port Washington Ave.
Milwaukee, WI 53212 / USA • 1-800-USA-KOSS (1-800-872-5677)
Koss-UK Ltd., Registered Office Address
One New Change, London, EC4M 9AF / UK
For warranty information visit www.koss.com.
This device complies with part 15 of the FCC rules and Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de
licence. L'exploitation est autorisée aux deux conditions suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible
d'en compromettre le fonctionnement.
Please read these safety warnings carefully to ensure your personal safety and prevent property damage.
- Do not leave your devices in close proximity to open ames or extreme sources of heat.
- Do not expose your devices to liquid or extreme humidity.
- Do not drop, disassemble, microwave, incinerate or paint your devices.
- Do not expose your devices to extreme high or low temperatures.
- Clean your devices with a clean, dry cloth.
- Do not leave your devices in direct sunlight for an extended period of time.
- Do not dispose of your devices in a re. The battery could explode causing injury or death.
- Do not attempt to clean your devices while they are being charged.
- Only charge your devices with the components supplied with the devices.
- Do not attempt to disable the devices, chargers or cables or force open the built-in battery.
- Do not charge your devices in damp areas or in extreme high or low temperatures.
- Do not leave or store the devices or any of their accessories near or over your automobile’s airbags, because serious injury may result
when an airbag deploys.
WARNING
!Bluetooth Headset
Model: Koss BT539i
Input: 5V , 160mA
FCC ID: L76-BT539I
I
Battery Capacity: 240mAh, 0.89Wh
IC: 10021A-BT539I
CMIIT ID: 2016DJ2325
S/N: BT000001A
Koss Corportation Made in China
0
7
0
0
CE Warning
Listen at moderate volumes to avoid hearing damage.
This equipment is in compliance with the essential requirements and other
relevant provisions of Directive 2014/53/EU.
Product features and specifications are subject to change without notice. Product may vary from images shown.
To enter Bluetooth discovery mode, from an off
state, depress and hold the center button until
light flashes red and blue.
red & blue (flashing)
Next Track
Previous Track
Vol Down
Vol Up
Play / Pause /
Power On / Power Off /
Answer Call / Hang Up Call /
Pairing Mode
USB Charging
Indicator Light
Audio In Microphone
Available Devices
Bluetooth Settings
Select “Koss BT539i” on transmitting
device to pair
Wired Listening Light Language
Charging Controls Ports
Bluetooth Discovery Mode