233621 SHELL User manual

PREVIOUS TRACK
Swipe backward
Green
blinking LED
5 sec
233621®
Shell
~33ft/10m
WARRANTY
USER
MANUAL
2 sec
VOLUME UP/DOWN
Swipe up/Slip down
CONVERSATION
MODE
Press and hold
with your palm
NEXT TRACK
Swipe forward
x 2 PLAY/PAUSE
Double tap
R
Power Off
Red light will blink
before power off
R
2 sec
R
Power On
White light
R
PAIRING
PLAY MUSIC
x 1 VOICE ASSISTANT
Single press
ANC High:
(Noise cancelling up to 35dB)
ANC Low: ( Ambient Mode )
(Noise cancelling up to 20dB)
R
R
VOICE ASSISTANT + ANC
©2020 Shenzhen Grandsun Electronics Co., Ltd.
x 2 ANSWER/
END CALL
Double tap
SWITCH BETWEEN
2 CALLS
With 2 active calls,
press and hold
for 2 sec
HOLD CURRENT
CALL/
PICK UP NEXT
Double tap
x 2
REJECT CALL
Press and
hold for 2 sec
REJECT SECOND
CALL/KEEP
CURRENT
Press and
hold for 2 sec
R
CALLS
ON/OFF
Note:
Pairing for the first time: Press and hold the power button for 2
seconds until the Bluetooth indicator flashes green
Connect a new device: When the product is powered off, press and
hold the power button for 5 seconds until Bluetooth indicator flashes
green.
WHAT'S IN THE BOX
THE PRODUCT
SHELL
USER MANUAL
Note:
Conversation mode is a convenient method to decrease
your audio volume and give you full awareness of your surroundings.
This allows you to have a quick conversation with someone or
immediately be aware of your surroundings.
CONVERSATION MODE
R
R
AUDIO CABLE
L
3.5 mm
Note:
When the headphone is out of power, use the 3.5mm audio cable to
connect your mobile phone with the headphone, to use Shell as a
wired headphone.
Power On/Off
light indicator
3.5 mm
input
Touch pad
Type C
ANC mode
switch
Power/
Bluetooth
button
Bluetooth
light
indicator
Voice
Assist
button
R
BATTERY INDICATION AND CHARGING
LOW BATTERY
Red blinking light
CHARGING
White and red light
FULLY CHARGED
White light
R
Note:
40 hours of playback time with Active Noise Cancellation on
and up to 60 hours with Active Noise Cancellation off.
10 min charge provides around 2 hours of playback time
Shell can be fully charged in 2 hours

PREVIOUS TRACK
Swipe backward
Green
blinking LED
5 sec
233621®
Shell
~33ft/10m
WARRANTY
USER
MANUAL
2 sec
VOLUME UP/DOWN
Swipe up/Slip down
CONVERSATION
MODE
Press and hold
with your palm
NEXT TRACK
Swipe forward
x 2 PLAY/PAUSE
Double tap
R
Power Off
Red light will blink
before power off
R
2 sec
R
Power On
White light
R
PAIRING
PLAY MUSIC
x 1 VOICE ASSISTANT
Single press
ANC High:
(Noise cancelling up to 35dB)
ANC Low: ( Ambient Mode )
(Noise cancelling up to 20dB)
R
R
VOICE ASSISTANT + ANC
©2020 Shenzhen Grandsun Electronics Co., Ltd.
x 2 ANSWER/
END CALL
Double tap
SWITCH BETWEEN
2 CALLS
With 2 active calls,
press and hold
for 2 sec
HOLD CURRENT
CALL/
PICK UP NEXT
Double tap
x 2
REJECT CALL
Press and
hold for 2 sec
REJECT SECOND
CALL/KEEP
CURRENT
Press and
hold for 2 sec
R
CALLS
ON/OFF
Note:
Pairing for the first time: Press and hold the power button for 2
seconds until the Bluetooth indicator flashes green
Connect a new device: When the product is powered off, press and
hold the power button for 5 seconds until Bluetooth indicator flashes
green.
WHAT'S IN THE BOX
THE PRODUCT
SHELL
USER MANUAL
Note:
Conversation mode is a convenient method to decrease
your audio volume and give you full awareness of your surroundings.
This allows you to have a quick conversation with someone or
immediately be aware of your surroundings.
CONVERSATION MODE
R
R
AUDIO CABLE
L
3.5 mm
Note:
When the headphone is out of power, use the 3.5mm audio cable to
connect your mobile phone with the headphone, to use Shell as a
wired headphone.
Power On/Off
light indicator
3.5 mm
input
Touch pad
Type C
ANC mode
switch
Power/
Bluetooth
button
Bluetooth
light
indicator
Voice
Assist
button
R
BATTERY INDICATION AND CHARGING
LOW BATTERY
Red blinking light
CHARGING
White and red light
FULLY CHARGED
White light
R
Note:
40 hours of playback time with Active Noise Cancellation on
and up to 60 hours with Active Noise Cancellation off.
10 min charge provides around 2 hours of playback time
Shell can be fully charged in 2 hours

PREVIOUS TRACK
Swipe backward
Green
blinking LED
5 sec
233621®
Shell
~33ft/10m
WARRANTY
USER
MANUAL
2 sec
VOLUME UP/DOWN
Swipe up/Slip down
CONVERSATION
MODE
Press and hold
with your palm
NEXT TRACK
Swipe forward
x 2 PLAY/PAUSE
Double tap
R
Power Off
Red light will blink
before power off
R
2 sec
R
Power On
White light
R
PAIRING
PLAY MUSIC
x 1 VOICE ASSISTANT
Single press
ANC High:
(Noise cancelling up to 35dB)
ANC Low: ( Ambient Mode )
(Noise cancelling up to 20dB)
R
R
VOICE ASSISTANT + ANC
©2020 Shenzhen Grandsun Electronics Co., Ltd.
x 2 ANSWER/
END CALL
Double tap
SWITCH BETWEEN
2 CALLS
With 2 active calls,
press and hold
for 2 sec
HOLD CURRENT
CALL/
PICK UP NEXT
Double tap
x 2
REJECT CALL
Press and
hold for 2 sec
REJECT SECOND
CALL/KEEP
CURRENT
Press and
hold for 2 sec
R
CALLS
ON/OFF
Note:
Pairing for the first time: Press and hold the power button for 2
seconds until the Bluetooth indicator flashes green
Connect a new device: When the product is powered off, press and
hold the power button for 5 seconds until Bluetooth indicator flashes
green.
WHAT'S IN THE BOX
THE PRODUCT
SHELL
USER MANUAL
Note:
Conversation mode is a convenient method to decrease
your audio volume and give you full awareness of your surroundings.
This allows you to have a quick conversation with someone or
immediately be aware of your surroundings.
CONVERSATION MODE
R
R
AUDIO CABLE
L
3.5 mm
Note:
When the headphone is out of power, use the 3.5mm audio cable to
connect your mobile phone with the headphone, to use Shell as a
wired headphone.
Power On/Off
light indicator
3.5 mm
input
Touch pad
Type C
ANC mode
switch
Power/
Bluetooth
button
Bluetooth
light
indicator
Voice
Assist
button
R
BATTERY INDICATION AND CHARGING
LOW BATTERY
Red blinking light
CHARGING
White and red light
FULLY CHARGED
White light
R
Note:
40 hours of playback time with Active Noise Cancellation on
and up to 60 hours with Active Noise Cancellation off.
10 min charge provides around 2 hours of playback time
Shell can be fully charged in 2 hours

PREVIOUS TRACK
Swipe backward
Green
blinking LED
5 sec
233621®
Shell
~33ft/10m
WARRANTY
USER
MANUAL
2 sec
VOLUME UP/DOWN
Swipe up/Slip down
CONVERSATION
MODE
Press and hold
with your palm
NEXT TRACK
Swipe forward
x 2 PLAY/PAUSE
Double tap
R
Power Off
Red light will blink
before power off
R
2 sec
R
Power On
White light
R
PAIRING
PLAY MUSIC
x 1 VOICE ASSISTANT
Single press
ANC High:
(Noise cancelling up to 35dB)
ANC Low: ( Ambient Mode )
(Noise cancelling up to 20dB)
R
R
VOICE ASSISTANT + ANC
©2020 Shenzhen Grandsun Electronics Co., Ltd.
x 2 ANSWER/
END CALL
Double tap
SWITCH BETWEEN
2 CALLS
With 2 active calls,
press and hold
for 2 sec
HOLD CURRENT
CALL/
PICK UP NEXT
Double tap
x 2
REJECT CALL
Press and
hold for 2 sec
REJECT SECOND
CALL/KEEP
CURRENT
Press and
hold for 2 sec
R
CALLS
ON/OFF
Note:
Pairing for the first time: Press and hold the power button for 2
seconds until the Bluetooth indicator flashes green
Connect a new device: When the product is powered off, press and
hold the power button for 5 seconds until Bluetooth indicator flashes
green.
WHAT'S IN THE BOX
THE PRODUCT
SHELL
USER MANUAL
Note:
Conversation mode is a convenient method to decrease
your audio volume and give you full awareness of your surroundings.
This allows you to have a quick conversation with someone or
immediately be aware of your surroundings.
CONVERSATION MODE
R
R
AUDIO CABLE
L
3.5 mm
Note:
When the headphone is out of power, use the 3.5mm audio cable to
connect your mobile phone with the headphone, to use Shell as a
wired headphone.
Power On/Off
light indicator
3.5 mm
input
Touch pad
Type C
ANC mode
switch
Power/
Bluetooth
button
Bluetooth
light
indicator
Voice
Assist
button
R
BATTERY INDICATION AND CHARGING
LOW BATTERY
Red blinking light
CHARGING
White and red light
FULLY CHARGED
White light
R
Note:
40 hours of playback time with Active Noise Cancellation on
and up to 60 hours with Active Noise Cancellation off.
10 min charge provides around 2 hours of playback time
Shell can be fully charged in 2 hours

PREVIOUS TRACK
Swipe backward
Green
blinking LED
5 sec
233621®
Shell
~33ft/10m
WARRANTY
USER
MANUAL
2 sec
VOLUME UP/DOWN
Swipe up/Slip down
CONVERSATION
MODE
Press and hold
with your palm
NEXT TRACK
Swipe forward
x 2 PLAY/PAUSE
Double tap
R
Power Off
Red light will blink
before power off
R
2 sec
R
Power On
White light
R
PAIRING
PLAY MUSIC
x 1 VOICE ASSISTANT
Single press
ANC High:
(Noise cancelling up to 35dB)
ANC Low: ( Ambient Mode )
(Noise cancelling up to 20dB)
R
R
VOICE ASSISTANT + ANC
©2020 Shenzhen Grandsun Electronics Co., Ltd.
x 2 ANSWER/
END CALL
Double tap
SWITCH BETWEEN
2 CALLS
With 2 active calls,
press and hold
for 2 sec
HOLD CURRENT
CALL/
PICK UP NEXT
Double tap
x 2
REJECT CALL
Press and
hold for 2 sec
REJECT SECOND
CALL/KEEP
CURRENT
Press and
hold for 2 sec
R
CALLS
ON/OFF
Note:
Pairing for the first time: Press and hold the power button for 2
seconds until the Bluetooth indicator flashes green
Connect a new device: When the product is powered off, press and
hold the power button for 5 seconds until Bluetooth indicator flashes
green.
WHAT'S IN THE BOX
THE PRODUCT
SHELL
USER MANUAL
Note:
Conversation mode is a convenient method to decrease
your audio volume and give you full awareness of your surroundings.
This allows you to have a quick conversation with someone or
immediately be aware of your surroundings.
CONVERSATION MODE
R
R
AUDIO CABLE
L
3.5 mm
Note:
When the headphone is out of power, use the 3.5mm audio cable to
connect your mobile phone with the headphone, to use Shell as a
wired headphone.
Power On/Off
light indicator
3.5 mm
input
Touch pad
Type C
ANC mode
switch
Power/
Bluetooth
button
Bluetooth
light
indicator
Voice
Assist
button
R
BATTERY INDICATION AND CHARGING
LOW BATTERY
Red blinking light
CHARGING
White and red light
FULLY CHARGED
White light
R
Note:
40 hours of playback time with Active Noise Cancellation on
and up to 60 hours with Active Noise Cancellation off.
10 min charge provides around 2 hours of playback time
Shell can be fully charged in 2 hours

PREVIOUS TRACK
Swipe backward
Green
blinking LED
5 sec
233621®
Shell
~33ft/10m
WARRANTY
USER
MANUAL
2 sec
VOLUME UP/DOWN
Swipe up/Slip down
CONVERSATION
MODE
Press and hold
with your palm
NEXT TRACK
Swipe forward
x 2 PLAY/PAUSE
Double tap
R
Power Off
Red light will blink
before power off
R
2 sec
R
Power On
White light
R
PAIRING
PLAY MUSIC
x 1 VOICE ASSISTANT
Single press
ANC High:
(Noise cancelling up to 35dB)
ANC Low: ( Ambient Mode )
(Noise cancelling up to 20dB)
R
R
VOICE ASSISTANT + ANC
©2020 Shenzhen Grandsun Electronics Co., Ltd.
x 2 ANSWER/
END CALL
Double tap
SWITCH BETWEEN
2 CALLS
With 2 active calls,
press and hold
for 2 sec
HOLD CURRENT
CALL/
PICK UP NEXT
Double tap
x 2
REJECT CALL
Press and
hold for 2 sec
REJECT SECOND
CALL/KEEP
CURRENT
Press and
hold for 2 sec
R
CALLS
ON/OFF
Note:
Pairing for the first time: Press and hold the power button for 2
seconds until the Bluetooth indicator flashes green
Connect a new device: When the product is powered off, press and
hold the power button for 5 seconds until Bluetooth indicator flashes
green.
WHAT'S IN THE BOX
THE PRODUCT
SHELL
USER MANUAL
Note:
Conversation mode is a convenient method to decrease
your audio volume and give you full awareness of your surroundings.
This allows you to have a quick conversation with someone or
immediately be aware of your surroundings.
CONVERSATION MODE
R
R
AUDIO CABLE
L
3.5 mm
Note:
When the headphone is out of power, use the 3.5mm audio cable to
connect your mobile phone with the headphone, to use Shell as a
wired headphone.
Power On/Off
light indicator
3.5 mm
input
Touch pad
Type C
ANC mode
switch
Power/
Bluetooth
button
Bluetooth
light
indicator
Voice
Assist
button
R
BATTERY INDICATION AND CHARGING
LOW BATTERY
Red blinking light
CHARGING
White and red light
FULLY CHARGED
White light
R
Note:
40 hours of playback time with Active Noise Cancellation on
and up to 60 hours with Active Noise Cancellation off.
10 min charge provides around 2 hours of playback time
Shell can be fully charged in 2 hours

233621 WARRANTY
1. The device is guaranteed for 12 months from the date
of purchase. Repair and maintenance service are free
during period.
2. The warranty limitation:
a, Man-made damage;
b, Beyond the Warranty period;
c, Accessories damage due to improper use and
maintenance;
d, Disassemble the device without manufacturer authority;
3. Service Information
233621 Website:WWW.233621.COM
1. The Bluetooth® word mark and logos are registered
trademarks owned by Bluetooth SIG. Inc. And any use
of such marks by SHENZHEN GRANDSU ELECTRONIC
CO., LTD. is under license.
2. “233621” word mark and logos are registered
trademarks of SHENZHEN GRANDSUN ELECTRONIC
CO., LTD. Reproduction in whole or in part without
written permission is prohibited. Other companies and
products mentioned herein are trademarks of their
respective owners.
Made in China
TRADEMARKS
THANK
YOU
SPECIFICATIONS
Type: 233621
®
Shell
Speaker size: 40mm
Audio decoding: SBC
Frequency response range: 20-20kHz
Connection method:
Type-C
charging cable
Bluetooth version: BT 5.0
Bluetooth frequency: 2.402-2.480GHz
Battery specifications: Rechargeable lithium ion
battery 1200 mAh
Charging time: 2 hours
Headphone playback time: 40H (ANC ON)/
60H (ANC OFF)
Product weight: 263g/9.3 oz
INFORMATIONAL NOTE FOR CUSTOMERS IN U.S.A. ONLY:
NOTE: 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 off 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 different
from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician
for help
Changes or modifications not expressly approved by the
party responsible for compliance could void the user's
authority to operate the equipment.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
①this device may not cause harmful interference
②this device must accept any interference received,
including interference that may cause undesired operation.
INFORMATIONAL NOTE FOR CUSTOMERS IN EU ONLY:
This device has been manufactured by or on behalf of
SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Hereby,
SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Declares
that this device is in compliance with Directive 2014/53/EU
This symbol on the device, the battery or on the
packaging indicates that the device and the
battery shall not be treated as household waste.
By ensuring these devices and batteries are
disposed of correctly, you will help prevent
potentially negative consequences for the
environment and case of devices that for safety,
performance or data integrity reasons require a permanent
connection with an incorporated battery, this battery
should be replaced by qualified service staff only.
To ensure that the battery and the electrical and electronic
device will be treated properly, hand over these devices at
end-of-life to the applicable collection point for the
recycling of electrical and electronic device. Hand the
battery over to the applicable collection point for the
recycling of waste batteries. For more detailed information
about recycling of this device or battery, please contact
your local Civic Office, your household waste disposal
service or the dealer.This symbol is only valid in the
European Union.
1. Do not use this device in dusty, humid, dirty
environment or places near magnetic field.
2. Keep an appropriate volume to avoid hearing damage.
3. Do not use this device while driving.
4. Keep the device away from heat sources like electric
heaters, microwave ovens, stoves, water heaters,
candles or any hot place.
5. Do not use a hair dryer or microwave to dry the device.
6. Please use the device and its accessories in
45°F~113°F/0°~45°.
When the environmental temperature is too high or
too low, it may cause device stop working.
7. Keep the device and its accessories in a ventilated and
cool place without direct sunlight.
8. This device is not a toy, and children must use this
device under adult supervision.
9. This device and its accessories are not normal
household garbage. Please deal with them according
to the local laws and regulations.
10. Headphone is designed to charge using standard USB
voltage (5v +- 0,25v). It is not recommended to charge
product using power supplies/sources with higher
voltage.
SAFETY AND HANDLING

233621 WARRANTY
1. The device is guaranteed for 12 months from the date
of purchase. Repair and maintenance service are free
during period.
2. The warranty limitation:
a, Man-made damage;
b, Beyond the Warranty period;
c, Accessories damage due to improper use and
maintenance;
d, Disassemble the device without manufacturer authority;
3. Service Information
233621 Website:WWW.233621.COM
1. The Bluetooth® word mark and logos are registered
trademarks owned by Bluetooth SIG. Inc. And any use
of such marks by SHENZHEN GRANDSU ELECTRONIC
CO., LTD. is under license.
2. “233621” word mark and logos are registered
trademarks of SHENZHEN GRANDSUN ELECTRONIC
CO., LTD. Reproduction in whole or in part without
written permission is prohibited. Other companies and
products mentioned herein are trademarks of their
respective owners.
Made in China
TRADEMARKS
THANK
YOU
SPECIFICATIONS
Type: 233621
®
Shell
Speaker size: 40mm
Audio decoding: SBC
Frequency response range: 20-20kHz
Connection method:
Type-C
charging cable
Bluetooth version: BT 5.0
Bluetooth frequency: 2.402-2.480GHz
Battery specifications: Rechargeable lithium ion
battery 1200 mAh
Charging time: 2 hours
Headphone playback time: 40H (ANC ON)/
60H (ANC OFF)
Product weight: 263g/9.3 oz
INFORMATIONAL NOTE FOR CUSTOMERS IN U.S.A. ONLY:
NOTE: 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 off 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 different
from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician
for help
Changes or modifications not expressly approved by the
party responsible for compliance could void the user's
authority to operate the equipment.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
①this device may not cause harmful interference
②this device must accept any interference received,
including interference that may cause undesired operation.
INFORMATIONAL NOTE FOR CUSTOMERS IN EU ONLY:
This device has been manufactured by or on behalf of
SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Hereby,
SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Declares
that this device is in compliance with Directive 2014/53/EU
This symbol on the device, the battery or on the
packaging indicates that the device and the
battery shall not be treated as household waste.
By ensuring these devices and batteries are
disposed of correctly, you will help prevent
potentially negative consequences for the
environment and case of devices that for safety,
performance or data integrity reasons require a permanent
connection with an incorporated battery, this battery
should be replaced by qualified service staff only.
To ensure that the battery and the electrical and electronic
device will be treated properly, hand over these devices at
end-of-life to the applicable collection point for the
recycling of electrical and electronic device. Hand the
battery over to the applicable collection point for the
recycling of waste batteries. For more detailed information
about recycling of this device or battery, please contact
your local Civic Office, your household waste disposal
service or the dealer.This symbol is only valid in the
European Union.
1. Do not use this device in dusty, humid, dirty
environment or places near magnetic field.
2. Keep an appropriate volume to avoid hearing damage.
3. Do not use this device while driving.
4. Keep the device away from heat sources like electric
heaters, microwave ovens, stoves, water heaters,
candles or any hot place.
5. Do not use a hair dryer or microwave to dry the device.
6. Please use the device and its accessories in
45°F~113°F/0°~45°.
When the environmental temperature is too high or
too low, it may cause device stop working.
7. Keep the device and its accessories in a ventilated and
cool place without direct sunlight.
8. This device is not a toy, and children must use this
device under adult supervision.
9. This device and its accessories are not normal
household garbage. Please deal with them according
to the local laws and regulations.
10. Headphone is designed to charge using standard USB
voltage (5v +- 0,25v). It is not recommended to charge
product using power supplies/sources with higher
voltage.
SAFETY AND HANDLING

233621 WARRANTY
1. The device is guaranteed for 12 months from the date
of purchase. Repair and maintenance service are free
during period.
2. The warranty limitation:
a, Man-made damage;
b, Beyond the Warranty period;
c, Accessories damage due to improper use and
maintenance;
d, Disassemble the device without manufacturer authority;
3. Service Information
233621 Website:WWW.233621.COM
1. The Bluetooth® word mark and logos are registered
trademarks owned by Bluetooth SIG. Inc. And any use
of such marks by SHENZHEN GRANDSU ELECTRONIC
CO., LTD. is under license.
2. “233621” word mark and logos are registered
trademarks of SHENZHEN GRANDSUN ELECTRONIC
CO., LTD. Reproduction in whole or in part without
written permission is prohibited. Other companies and
products mentioned herein are trademarks of their
respective owners.
Made in China
TRADEMARKS
THANK
YOU
SPECIFICATIONS
Type: 233621
®
Shell
Speaker size: 40mm
Audio decoding: SBC
Frequency response range: 20-20kHz
Connection method:
Type-C
charging cable
Bluetooth version: BT 5.0
Bluetooth frequency: 2.402-2.480GHz
Battery specifications: Rechargeable lithium ion
battery 1200 mAh
Charging time: 2 hours
Headphone playback time: 40H (ANC ON)/
60H (ANC OFF)
Product weight: 263g/9.3 oz
INFORMATIONAL NOTE FOR CUSTOMERS IN U.S.A. ONLY:
NOTE: 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 off 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 different
from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician
for help
Changes or modifications not expressly approved by the
party responsible for compliance could void the user's
authority to operate the equipment.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
①this device may not cause harmful interference
②this device must accept any interference received,
including interference that may cause undesired operation.
INFORMATIONAL NOTE FOR CUSTOMERS IN EU ONLY:
This device has been manufactured by or on behalf of
SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Hereby,
SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Declares
that this device is in compliance with Directive 2014/53/EU
This symbol on the device, the battery or on the
packaging indicates that the device and the
battery shall not be treated as household waste.
By ensuring these devices and batteries are
disposed of correctly, you will help prevent
potentially negative consequences for the
environment and case of devices that for safety,
performance or data integrity reasons require a permanent
connection with an incorporated battery, this battery
should be replaced by qualified service staff only.
To ensure that the battery and the electrical and electronic
device will be treated properly, hand over these devices at
end-of-life to the applicable collection point for the
recycling of electrical and electronic device. Hand the
battery over to the applicable collection point for the
recycling of waste batteries. For more detailed information
about recycling of this device or battery, please contact
your local Civic Office, your household waste disposal
service or the dealer.This symbol is only valid in the
European Union.
1. Do not use this device in dusty, humid, dirty
environment or places near magnetic field.
2. Keep an appropriate volume to avoid hearing damage.
3. Do not use this device while driving.
4. Keep the device away from heat sources like electric
heaters, microwave ovens, stoves, water heaters,
candles or any hot place.
5. Do not use a hair dryer or microwave to dry the device.
6. Please use the device and its accessories in
45°F~113°F/0°~45°.
When the environmental temperature is too high or
too low, it may cause device stop working.
7. Keep the device and its accessories in a ventilated and
cool place without direct sunlight.
8. This device is not a toy, and children must use this
device under adult supervision.
9. This device and its accessories are not normal
household garbage. Please deal with them according
to the local laws and regulations.
10. Headphone is designed to charge using standard USB
voltage (5v +- 0,25v). It is not recommended to charge
product using power supplies/sources with higher
voltage.
SAFETY AND HANDLING

233621 WARRANTY
1. The device is guaranteed for 12 months from the date
of purchase. Repair and maintenance service are free
during period.
2. The warranty limitation:
a, Man-made damage;
b, Beyond the Warranty period;
c, Accessories damage due to improper use and
maintenance;
d, Disassemble the device without manufacturer authority;
3. Service Information
233621 Website:WWW.233621.COM
1. The Bluetooth® word mark and logos are registered
trademarks owned by Bluetooth SIG. Inc. And any use
of such marks by SHENZHEN GRANDSU ELECTRONIC
CO., LTD. is under license.
2. “233621” word mark and logos are registered
trademarks of SHENZHEN GRANDSUN ELECTRONIC
CO., LTD. Reproduction in whole or in part without
written permission is prohibited. Other companies and
products mentioned herein are trademarks of their
respective owners.
Made in China
TRADEMARKS
THANK
YOU
SPECIFICATIONS
Type: 233621
®
Shell
Speaker size: 40mm
Audio decoding: SBC
Frequency response range: 20-20kHz
Connection method:
Type-C
charging cable
Bluetooth version: BT 5.0
Bluetooth frequency: 2.402-2.480GHz
Battery specifications: Rechargeable lithium ion
battery 1200 mAh
Charging time: 2 hours
Headphone playback time: 40H (ANC ON)/
60H (ANC OFF)
Product weight: 263g/9.3 oz
INFORMATIONAL NOTE FOR CUSTOMERS IN U.S.A. ONLY:
NOTE: 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 off 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 different
from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician
for help
Changes or modifications not expressly approved by the
party responsible for compliance could void the user's
authority to operate the equipment.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
①this device may not cause harmful interference
②this device must accept any interference received,
including interference that may cause undesired operation.
INFORMATIONAL NOTE FOR CUSTOMERS IN EU ONLY:
This device has been manufactured by or on behalf of
SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Hereby,
SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Declares
that this device is in compliance with Directive 2014/53/EU
This symbol on the device, the battery or on the
packaging indicates that the device and the
battery shall not be treated as household waste.
By ensuring these devices and batteries are
disposed of correctly, you will help prevent
potentially negative consequences for the
environment and case of devices that for safety,
performance or data integrity reasons require a permanent
connection with an incorporated battery, this battery
should be replaced by qualified service staff only.
To ensure that the battery and the electrical and electronic
device will be treated properly, hand over these devices at
end-of-life to the applicable collection point for the
recycling of electrical and electronic device. Hand the
battery over to the applicable collection point for the
recycling of waste batteries. For more detailed information
about recycling of this device or battery, please contact
your local Civic Office, your household waste disposal
service or the dealer.This symbol is only valid in the
European Union.
1. Do not use this device in dusty, humid, dirty
environment or places near magnetic field.
2. Keep an appropriate volume to avoid hearing damage.
3. Do not use this device while driving.
4. Keep the device away from heat sources like electric
heaters, microwave ovens, stoves, water heaters,
candles or any hot place.
5. Do not use a hair dryer or microwave to dry the device.
6. Please use the device and its accessories in
45°F~113°F/0°~45°.
When the environmental temperature is too high or
too low, it may cause device stop working.
7. Keep the device and its accessories in a ventilated and
cool place without direct sunlight.
8. This device is not a toy, and children must use this
device under adult supervision.
9. This device and its accessories are not normal
household garbage. Please deal with them according
to the local laws and regulations.
10. Headphone is designed to charge using standard USB
voltage (5v +- 0,25v). It is not recommended to charge
product using power supplies/sources with higher
voltage.
SAFETY AND HANDLING

233621 WARRANTY
1. The device is guaranteed for 12 months from the date
of purchase. Repair and maintenance service are free
during period.
2. The warranty limitation:
a, Man-made damage;
b, Beyond the Warranty period;
c, Accessories damage due to improper use and
maintenance;
d, Disassemble the device without manufacturer authority;
3. Service Information
233621 Website:WWW.233621.COM
1. The Bluetooth® word mark and logos are registered
trademarks owned by Bluetooth SIG. Inc. And any use
of such marks by SHENZHEN GRANDSU ELECTRONIC
CO., LTD. is under license.
2. “233621” word mark and logos are registered
trademarks of SHENZHEN GRANDSUN ELECTRONIC
CO., LTD. Reproduction in whole or in part without
written permission is prohibited. Other companies and
products mentioned herein are trademarks of their
respective owners.
Made in China
TRADEMARKS
THANK
YOU
SPECIFICATIONS
Type: 233621
®
Shell
Speaker size: 40mm
Audio decoding: SBC
Frequency response range: 20-20kHz
Connection method:
Type-C
charging cable
Bluetooth version: BT 5.0
Bluetooth frequency: 2.402-2.480GHz
Battery specifications: Rechargeable lithium ion
battery 1200 mAh
Charging time: 2 hours
Headphone playback time: 40H (ANC ON)/
60H (ANC OFF)
Product weight: 263g/9.3 oz
INFORMATIONAL NOTE FOR CUSTOMERS IN U.S.A. ONLY:
NOTE: 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 off 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 different
from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician
for help
Changes or modifications not expressly approved by the
party responsible for compliance could void the user's
authority to operate the equipment.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
①this device may not cause harmful interference
②this device must accept any interference received,
including interference that may cause undesired operation.
INFORMATIONAL NOTE FOR CUSTOMERS IN EU ONLY:
This device has been manufactured by or on behalf of
SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Hereby,
SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Declares
that this device is in compliance with Directive 2014/53/EU
This symbol on the device, the battery or on the
packaging indicates that the device and the
battery shall not be treated as household waste.
By ensuring these devices and batteries are
disposed of correctly, you will help prevent
potentially negative consequences for the
environment and case of devices that for safety,
performance or data integrity reasons require a permanent
connection with an incorporated battery, this battery
should be replaced by qualified service staff only.
To ensure that the battery and the electrical and electronic
device will be treated properly, hand over these devices at
end-of-life to the applicable collection point for the
recycling of electrical and electronic device. Hand the
battery over to the applicable collection point for the
recycling of waste batteries. For more detailed information
about recycling of this device or battery, please contact
your local Civic Office, your household waste disposal
service or the dealer.This symbol is only valid in the
European Union.
1. Do not use this device in dusty, humid, dirty
environment or places near magnetic field.
2. Keep an appropriate volume to avoid hearing damage.
3. Do not use this device while driving.
4. Keep the device away from heat sources like electric
heaters, microwave ovens, stoves, water heaters,
candles or any hot place.
5. Do not use a hair dryer or microwave to dry the device.
6. Please use the device and its accessories in
45°F~113°F/0°~45°.
When the environmental temperature is too high or
too low, it may cause device stop working.
7. Keep the device and its accessories in a ventilated and
cool place without direct sunlight.
8. This device is not a toy, and children must use this
device under adult supervision.
9. This device and its accessories are not normal
household garbage. Please deal with them according
to the local laws and regulations.
10. Headphone is designed to charge using standard USB
voltage (5v +- 0,25v). It is not recommended to charge
product using power supplies/sources with higher
voltage.
SAFETY AND HANDLING

233621 WARRANTY
1. The device is guaranteed for 12 months from the date
of purchase. Repair and maintenance service are free
during period.
2. The warranty limitation:
a, Man-made damage;
b, Beyond the Warranty period;
c, Accessories damage due to improper use and
maintenance;
d, Disassemble the device without manufacturer authority;
3. Service Information
233621 Website:WWW.233621.COM
1. The Bluetooth® word mark and logos are registered
trademarks owned by Bluetooth SIG. Inc. And any use
of such marks by SHENZHEN GRANDSU ELECTRONIC
CO., LTD. is under license.
2. “233621” word mark and logos are registered
trademarks of SHENZHEN GRANDSUN ELECTRONIC
CO., LTD. Reproduction in whole or in part without
written permission is prohibited. Other companies and
products mentioned herein are trademarks of their
respective owners.
Made in China
TRADEMARKS
THANK
YOU
SPECIFICATIONS
Type: 233621
®
Shell
Speaker size: 40mm
Audio decoding: SBC
Frequency response range: 20-20kHz
Connection method:
Type-C
charging cable
Bluetooth version: BT 5.0
Bluetooth frequency: 2.402-2.480GHz
Battery specifications: Rechargeable lithium ion
battery 1200 mAh
Charging time: 2 hours
Headphone playback time: 40H (ANC ON)/
60H (ANC OFF)
Product weight: 263g/9.3 oz
INFORMATIONAL NOTE FOR CUSTOMERS IN U.S.A. ONLY:
NOTE: 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 off 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 different
from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician
for help
Changes or modifications not expressly approved by the
party responsible for compliance could void the user's
authority to operate the equipment.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
①this device may not cause harmful interference
②this device must accept any interference received,
including interference that may cause undesired operation.
INFORMATIONAL NOTE FOR CUSTOMERS IN EU ONLY:
This device has been manufactured by or on behalf of
SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Hereby,
SHENZHEN GRANDSUN ELECTRONIC CO., LTD. Declares
that this device is in compliance with Directive 2014/53/EU
This symbol on the device, the battery or on the
packaging indicates that the device and the
battery shall not be treated as household waste.
By ensuring these devices and batteries are
disposed of correctly, you will help prevent
potentially negative consequences for the
environment and case of devices that for safety,
performance or data integrity reasons require a permanent
connection with an incorporated battery, this battery
should be replaced by qualified service staff only.
To ensure that the battery and the electrical and electronic
device will be treated properly, hand over these devices at
end-of-life to the applicable collection point for the
recycling of electrical and electronic device. Hand the
battery over to the applicable collection point for the
recycling of waste batteries. For more detailed information
about recycling of this device or battery, please contact
your local Civic Office, your household waste disposal
service or the dealer.This symbol is only valid in the
European Union.
1. Do not use this device in dusty, humid, dirty
environment or places near magnetic field.
2. Keep an appropriate volume to avoid hearing damage.
3. Do not use this device while driving.
4. Keep the device away from heat sources like electric
heaters, microwave ovens, stoves, water heaters,
candles or any hot place.
5. Do not use a hair dryer or microwave to dry the device.
6. Please use the device and its accessories in
45°F~113°F/0°~45°.
When the environmental temperature is too high or
too low, it may cause device stop working.
7. Keep the device and its accessories in a ventilated and
cool place without direct sunlight.
8. This device is not a toy, and children must use this
device under adult supervision.
9. This device and its accessories are not normal
household garbage. Please deal with them according
to the local laws and regulations.
10. Headphone is designed to charge using standard USB
voltage (5v +- 0,25v). It is not recommended to charge
product using power supplies/sources with higher
voltage.
SAFETY AND HANDLING
Table of contents
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