Goji GTCIBTB21 User manual

Wireless
In-ear Headphones
Instruction Manual
GTCIBTB21 / GTCIBTP21
Thank you for purchasing your new
product.
We recommend that you spend some time
reading this instruction manual in order that you
fully understand all the operational features it
oers. You will also nd some hints and tips to
help you resolve any issues.
Read all the safety instructions carefully before
use and keep this instruction manual for future
reference.
Unpacking
Remove all items from the packaging. Retain the
packaging. If you dispose of it please do so according to
local regulations.
The following items are included:
• The Unit
• USB Charging Cable
• 3 sets of Earbud Tips (S/M/L)
• 3 sets of Ear Fins (S/M/L)
• Carry Pouch
• Instruction Manual
Product Overview How to Wear Earbuds
Before wearing the earphones, ensure to attach the ear
tips and the ear ns to the earbuds.
1. Use the ear tips and the ear ns that t your ears.
IB-GTCIBTxx21-211207V3
Declaration of Conformity (RER)
Hereby, Currys Group Limited declares that the
radio equipment type [GTCIBTB21 / GTCIBTP21] is in
compliance with Radio Equipment Regulations 2017
(S.I. 2017/1206).
The full text of the UK declaration of conformity is
available at the following internet address:
https://www.currys.co.uk/
Click on HELP & SERVICES/Repairs & maintenance/
Product Manuals and enter the model number.
1
2
3
4
5
6
1. button
• Decrease volume
• Go to previous track
2. button
• Switch the
earphones on/o
• Multi-functional
3. Status indicator
4. button
• Increase volume
• Go to next track
5. Charger connector
6. Microphone
Charging the Battery
When using the unit for the rst time, charge it fully rst.
1. Connect the USB charging cable to the earphones.
2. Connect the other end of the USB charging cable to a
powered USB device.
Status LED Indicator
Low battery The red indicator will flash slowly.
Charging The red indicator will light up.
Fully charged The blue indicator will light up.
While charging the earphones, the Bluetooth
function will be disabled.
2. Check the direction of each earbud and put them in
your ears with the ear n facing upwards until they sit
conformity in your ears.
3. Adjust the earbuds by rotating them to the left or
right to t your ears.

Wireless
In-ear Headphones
Instruction Manual
GTCIBTB21 / GTCIBTP21
Thank you for purchasing your new
product.
We recommend that you spend some time
reading this instruction manual in order that you
fully understand all the operational features it
oers. You will also nd some hints and tips to
help you resolve any issues.
Read all the safety instructions carefully before
use and keep this instruction manual for future
reference.
Unpacking
Remove all items from the packaging. Retain the
packaging. If you dispose of it please do so according to
local regulations.
The following items are included:
• The Unit
• USB Charging Cable
• 3 sets of Earbud Tips (S/M/L)
• 3 sets of Ear Fins (S/M/L)
• Carry Pouch
• Instruction Manual
Product Overview How to Wear Earbuds
Before wearing the earphones, ensure to attach the ear
tips and the ear ns to the earbuds.
1. Use the ear tips and the ear ns that t your ears.
IB-GTCIBTxx21-211207V3
Declaration of Conformity (RER)
Hereby, Currys Group Limited declares that the
radio equipment type [GTCIBTB21 / GTCIBTP21] is in
compliance with Radio Equipment Regulations 2017
(S.I. 2017/1206).
The full text of the UK declaration of conformity is
available at the following internet address:
https://www.currys.co.uk/
Click on HELP & SERVICES/Repairs & maintenance/
Product Manuals and enter the model number.
1
2
3
4
5
6
1. button
• Decrease volume
• Go to previous track
2. button
• Switch the
earphones on/o
• Multi-functional
3. Status indicator
4. button
• Increase volume
• Go to next track
5. Charger connector
6. Microphone
Charging the Battery
When using the unit for the rst time, charge it fully rst.
1. Connect the USB charging cable to the earphones.
2. Connect the other end of the USB charging cable to a
powered USB device.
Status LED Indicator
Low battery The red indicator will flash slowly.
Charging The red indicator will light up.
Fully charged The blue indicator will light up.
While charging the earphones, the Bluetooth
function will be disabled.
2. Check the direction of each earbud and put them in
your ears with the ear n facing upwards until they sit
conformity in your ears.
3. Adjust the earbuds by rotating them to the left or
right to t your ears.

Wireless
In-ear Headphones
Instruction Manual
GTCIBTB21 / GTCIBTP21
Thank you for purchasing your new
product.
We recommend that you spend some time
reading this instruction manual in order that you
fully understand all the operational features it
oers. You will also nd some hints and tips to
help you resolve any issues.
Read all the safety instructions carefully before
use and keep this instruction manual for future
reference.
Unpacking
Remove all items from the packaging. Retain the
packaging. If you dispose of it please do so according to
local regulations.
The following items are included:
• The Unit
• USB Charging Cable
• 3 sets of Earbud Tips (S/M/L)
• 3 sets of Ear Fins (S/M/L)
• Carry Pouch
• Instruction Manual
Product Overview How to Wear Earbuds
Before wearing the earphones, ensure to attach the ear
tips and the ear ns to the earbuds.
1. Use the ear tips and the ear ns that t your ears.
IB-GTCIBTxx21-211207V3
Declaration of Conformity (RER)
Hereby, Currys Group Limited declares that the
radio equipment type [GTCIBTB21 / GTCIBTP21] is in
compliance with Radio Equipment Regulations 2017
(S.I. 2017/1206).
The full text of the UK declaration of conformity is
available at the following internet address:
https://www.currys.co.uk/
Click on HELP & SERVICES/Repairs & maintenance/
Product Manuals and enter the model number.
1
2
3
4
5
6
1. button
• Decrease volume
• Go to previous track
2. button
• Switch the
earphones on/o
• Multi-functional
3. Status indicator
4. button
• Increase volume
• Go to next track
5. Charger connector
6. Microphone
Charging the Battery
When using the unit for the rst time, charge it fully rst.
1. Connect the USB charging cable to the earphones.
2. Connect the other end of the USB charging cable to a
powered USB device.
Status LED Indicator
Low battery The red indicator will flash slowly.
Charging The red indicator will light up.
Fully charged The blue indicator will light up.
While charging the earphones, the Bluetooth
function will be disabled.
2. Check the direction of each earbud and put them in
your ears with the ear n facing upwards until they sit
conformity in your ears.
3. Adjust the earbuds by rotating them to the left or
right to t your ears.

Wireless
In-ear Headphones
Instruction Manual
GTCIBTB21 / GTCIBTP21
Thank you for purchasing your new
product.
We recommend that you spend some time
reading this instruction manual in order that you
fully understand all the operational features it
oers. You will also nd some hints and tips to
help you resolve any issues.
Read all the safety instructions carefully before
use and keep this instruction manual for future
reference.
Unpacking
Remove all items from the packaging. Retain the
packaging. If you dispose of it please do so according to
local regulations.
The following items are included:
• The Unit
• USB Charging Cable
• 3 sets of Earbud Tips (S/M/L)
• 3 sets of Ear Fins (S/M/L)
• Carry Pouch
• Instruction Manual
Product Overview How to Wear Earbuds
Before wearing the earphones, ensure to attach the ear
tips and the ear ns to the earbuds.
1. Use the ear tips and the ear ns that t your ears.
IB-GTCIBTxx21-211207V3
Declaration of Conformity (RER)
Hereby, Currys Group Limited declares that the
radio equipment type [GTCIBTB21 / GTCIBTP21] is in
compliance with Radio Equipment Regulations 2017
(S.I. 2017/1206).
The full text of the UK declaration of conformity is
available at the following internet address:
https://www.currys.co.uk/
Click on HELP & SERVICES/Repairs & maintenance/
Product Manuals and enter the model number.
1
2
3
4
5
6
1. button
• Decrease volume
• Go to previous track
2. button
• Switch the
earphones on/o
• Multi-functional
3. Status indicator
4. button
• Increase volume
• Go to next track
5. Charger connector
6. Microphone
Charging the Battery
When using the unit for the rst time, charge it fully rst.
1. Connect the USB charging cable to the earphones.
2. Connect the other end of the USB charging cable to a
powered USB device.
Status LED Indicator
Low battery The red indicator will flash slowly.
Charging The red indicator will light up.
Fully charged The blue indicator will light up.
While charging the earphones, the Bluetooth
function will be disabled.
2. Check the direction of each earbud and put them in
your ears with the ear n facing upwards until they sit
conformity in your ears.
3. Adjust the earbuds by rotating them to the left or
right to t your ears.

Wireless
In-ear Headphones
Instruction Manual
GTCIBTB21 / GTCIBTP21
Thank you for purchasing your new
product.
We recommend that you spend some time
reading this instruction manual in order that you
fully understand all the operational features it
oers. You will also nd some hints and tips to
help you resolve any issues.
Read all the safety instructions carefully before
use and keep this instruction manual for future
reference.
Unpacking
Remove all items from the packaging. Retain the
packaging. If you dispose of it please do so according to
local regulations.
The following items are included:
• The Unit
• USB Charging Cable
• 3 sets of Earbud Tips (S/M/L)
• 3 sets of Ear Fins (S/M/L)
• Carry Pouch
• Instruction Manual
Product Overview How to Wear Earbuds
Before wearing the earphones, ensure to attach the ear
tips and the ear ns to the earbuds.
1. Use the ear tips and the ear ns that t your ears.
IB-GTCIBTxx21-211207V3
Declaration of Conformity (RER)
Hereby, Currys Group Limited declares that the
radio equipment type [GTCIBTB21 / GTCIBTP21] is in
compliance with Radio Equipment Regulations 2017
(S.I. 2017/1206).
The full text of the UK declaration of conformity is
available at the following internet address:
https://www.currys.co.uk/
Click on HELP & SERVICES/Repairs & maintenance/
Product Manuals and enter the model number.
1
2
3
4
5
6
1. button
• Decrease volume
• Go to previous track
2. button
• Switch the
earphones on/o
• Multi-functional
3. Status indicator
4. button
• Increase volume
• Go to next track
5. Charger connector
6. Microphone
Charging the Battery
When using the unit for the rst time, charge it fully rst.
1. Connect the USB charging cable to the earphones.
2. Connect the other end of the USB charging cable to a
powered USB device.
Status LED Indicator
Low battery The red indicator will flash slowly.
Charging The red indicator will light up.
Fully charged The blue indicator will light up.
While charging the earphones, the Bluetooth
function will be disabled.
2. Check the direction of each earbud and put them in
your ears with the ear n facing upwards until they sit
conformity in your ears.
3. Adjust the earbuds by rotating them to the left or
right to t your ears.

Specications
Earphones
Model GTCIBTB21 / GTCIBTP21
Sensitivity 93dB +/- 3 @ 1KHz
Impedance 16 Ω
Rated Input DC 5V 100 mA
Frequency Response 20 Hz – 20 kHz
Frequency Band(s) 2400 – 2482 MHz
Max. Radio Frequency
Power Transmitted
8 dBm
Bluetooth Interface Bluetooth 5.1
Bluetooth Profiles A2DP, AVRCP, HFP, HSP
Operating Distance Up to 10m
Battery Life Up to 14 hrs
Charging Time 2 hrs
Operation Temp. 5 – 40 °C
Net Weight 15.8 g
Batteries
Model 581013A
Battery Type Li-ion rechargeable battery
Battery Rating 3.7V 50mAh 0.185Wh
Number of Battery 2
Designation Code 1ICP6/10/13
Manufacturer Dongguan Sunly Battery
Technology Co., Ltd.
Dimension 10.2 × 10.8 × 7.8 mm
Net Weight 2 g
Switching On/O
To switch on, press and hold until the blue indicator
lights up once.
• If the earphones are already paired with a Bluetooth
device before, it will automatically connect with the
last paired device when both are in pairing mode.
To switch o, press and hold until the red indicator
lights up once.
Bluetooth Pairing
1. Ensure the earphones is switched o.
2. Press and hold for 8 seconds to enter Bluetooth
pair mode. The red and blue indicator starts ashing
rapidly and alternately.
If no Bluetooth device is paired within 5
minutes, the earphones will switch o.
3. Activate the Bluetooth feature on your Bluetooth
device and start searching. Then select “GTCIBTB21”
or “GTCIBTP21”.
4. If necessary, enter the passcode,“0000”, to pair and
connect the earphones. Some device also ask to
conrm the headset connection after paring.
5. The blue indicator will blink and the earphones
will beep after you have successfully paired the
earphones.
Not compatible with all smartphone brands;
please check your individual smartphone user
manual.
Operation
If you receive or make a call while listening to music, the
music is paused until you end the call.
To Frequency
Increase volume repeatedly as desired
Decrease volume repeatedly as desired
Call Functions
Answer / end a call once
Reject a call Hold 2 seconds then release
Redial last call twice
Playback Functions
Play / pause track once
Skip to next track Hold
Go to previous track Hold
Other Functions
Use voice control and once
Reset the Headphones
To hardware reset the headphones, connect the USB
cable to a charging source.
Hints and Tips
Product not working:
• Recharge the product.
• Ensure the product is switched on.
• Ensure your Bluetooth-enabled device’s wireless
function is active.
• Ensure there are no other wireless devices in
discovery mode.
• Move the product closer to the device.
• Pair again the product and the device.

Specications
Earphones
Model GTCIBTB21 / GTCIBTP21
Sensitivity 93dB +/- 3 @ 1KHz
Impedance 16 Ω
Rated Input DC 5V 100 mA
Frequency Response 20 Hz – 20 kHz
Frequency Band(s) 2400 – 2482 MHz
Max. Radio Frequency
Power Transmitted
8 dBm
Bluetooth Interface Bluetooth 5.1
Bluetooth Profiles A2DP, AVRCP, HFP, HSP
Operating Distance Up to 10m
Battery Life Up to 14 hrs
Charging Time 2 hrs
Operation Temp. 5 – 40 °C
Net Weight 15.8 g
Batteries
Model 581013A
Battery Type Li-ion rechargeable battery
Battery Rating 3.7V 50mAh 0.185Wh
Number of Battery 2
Designation Code 1ICP6/10/13
Manufacturer Dongguan Sunly Battery
Technology Co., Ltd.
Dimension 10.2 × 10.8 × 7.8 mm
Net Weight 2 g
Switching On/O
To switch on, press and hold until the blue indicator
lights up once.
• If the earphones are already paired with a Bluetooth
device before, it will automatically connect with the
last paired device when both are in pairing mode.
To switch o, press and hold until the red indicator
lights up once.
Bluetooth Pairing
1. Ensure the earphones is switched o.
2. Press and hold for 8 seconds to enter Bluetooth
pair mode. The red and blue indicator starts ashing
rapidly and alternately.
If no Bluetooth device is paired within 5
minutes, the earphones will switch o.
3. Activate the Bluetooth feature on your Bluetooth
device and start searching. Then select “GTCIBTB21”
or “GTCIBTP21”.
4. If necessary, enter the passcode, “0000”, to pair and
connect the earphones. Some device also ask to
conrm the headset connection after paring.
5. The blue indicator will blink and the earphones
will beep after you have successfully paired the
earphones.
Not compatible with all smartphone brands;
please check your individual smartphone user
manual.
Operation
If you receive or make a call while listening to music, the
music is paused until you end the call.
To Frequency
Increase volume repeatedly as desired
Decrease volume repeatedly as desired
Call Functions
Answer / end a call once
Reject a call Hold 2 seconds then release
Redial last call twice
Playback Functions
Play / pause track once
Skip to next track Hold
Go to previous track Hold
Other Functions
Use voice control and once
Reset the Headphones
To hardware reset the headphones, connect the USB
cable to a charging source.
Hints and Tips
Product not working:
• Recharge the product.
• Ensure the product is switched on.
• Ensure your Bluetooth-enabled device’s wireless
function is active.
• Ensure there are no other wireless devices in
discovery mode.
• Move the product closer to the device.
• Pair again the product and the device.

Specications
Earphones
Model GTCIBTB21 / GTCIBTP21
Sensitivity 93dB +/- 3 @ 1KHz
Impedance 16 Ω
Rated Input DC 5V 100 mA
Frequency Response 20 Hz – 20 kHz
Frequency Band(s) 2400 – 2482 MHz
Max. Radio Frequency
Power Transmitted
8 dBm
Bluetooth Interface Bluetooth 5.1
Bluetooth Profiles A2DP, AVRCP, HFP, HSP
Operating Distance Up to 10m
Battery Life Up to 14 hrs
Charging Time 2 hrs
Operation Temp. 5 – 40 °C
Net Weight 15.8 g
Batteries
Model 581013A
Battery Type Li-ion rechargeable battery
Battery Rating 3.7V 50mAh 0.185Wh
Number of Battery 2
Designation Code 1ICP6/10/13
Manufacturer Dongguan Sunly Battery
Technology Co., Ltd.
Dimension 10.2 × 10.8 × 7.8 mm
Net Weight 2 g
Switching On/O
To switch on, press and hold until the blue indicator
lights up once.
• If the earphones are already paired with a Bluetooth
device before, it will automatically connect with the
last paired device when both are in pairing mode.
To switch o, press and hold until the red indicator
lights up once.
Bluetooth Pairing
1. Ensure the earphones is switched o.
2. Press and hold for 8 seconds to enter Bluetooth
pair mode. The red and blue indicator starts ashing
rapidly and alternately.
If no Bluetooth device is paired within 5
minutes, the earphones will switch o.
3. Activate the Bluetooth feature on your Bluetooth
device and start searching. Then select “GTCIBTB21”
or “GTCIBTP21”.
4. If necessary, enter the passcode,“0000”, to pair and
connect the earphones. Some device also ask to
conrm the headset connection after paring.
5. The blue indicator will blink and the earphones
will beep after you have successfully paired the
earphones.
Not compatible with all smartphone brands;
please check your individual smartphone user
manual.
Operation
If you receive or make a call while listening to music, the
music is paused until you end the call.
To Frequency
Increase volume repeatedly as desired
Decrease volume repeatedly as desired
Call Functions
Answer / end a call once
Reject a call Hold 2 seconds then release
Redial last call twice
Playback Functions
Play / pause track once
Skip to next track Hold
Go to previous track Hold
Other Functions
Use voice control and once
Reset the Headphones
To hardware reset the headphones, connect the USB
cable to a charging source.
Hints and Tips
Product not working:
• Recharge the product.
• Ensure the product is switched on.
• Ensure your Bluetooth-enabled device’s wireless
function is active.
• Ensure there are no other wireless devices in
discovery mode.
• Move the product closer to the device.
• Pair again the product and the device.

Specications
Earphones
Model GTCIBTB21 / GTCIBTP21
Sensitivity 93dB +/- 3 @ 1KHz
Impedance 16 Ω
Rated Input DC 5V 100 mA
Frequency Response 20 Hz – 20 kHz
Frequency Band(s) 2400 – 2482 MHz
Max. Radio Frequency
Power Transmitted
8 dBm
Bluetooth Interface Bluetooth 5.1
Bluetooth Profiles A2DP, AVRCP, HFP, HSP
Operating Distance Up to 10m
Battery Life Up to 14 hrs
Charging Time 2 hrs
Operation Temp. 5 – 40 °C
Net Weight 15.8 g
Batteries
Model 581013A
Battery Type Li-ion rechargeable battery
Battery Rating 3.7V 50mAh 0.185Wh
Number of Battery 2
Designation Code 1ICP6/10/13
Manufacturer Dongguan Sunly Battery
Technology Co., Ltd.
Dimension 10.2 × 10.8 × 7.8 mm
Net Weight 2 g
Switching On/O
To switch on, press and hold until the blue indicator
lights up once.
• If the earphones are already paired with a Bluetooth
device before, it will automatically connect with the
last paired device when both are in pairing mode.
To switch o, press and hold until the red indicator
lights up once.
Bluetooth Pairing
1. Ensure the earphones is switched o.
2. Press and hold for 8 seconds to enter Bluetooth
pair mode. The red and blue indicator starts ashing
rapidly and alternately.
If no Bluetooth device is paired within 5
minutes, the earphones will switch o.
3. Activate the Bluetooth feature on your Bluetooth
device and start searching. Then select “GTCIBTB21”
or “GTCIBTP21”.
4. If necessary, enter the passcode,“0000”, to pair and
connect the earphones. Some device also ask to
conrm the headset connection after paring.
5. The blue indicator will blink and the earphones
will beep after you have successfully paired the
earphones.
Not compatible with all smartphone brands;
please check your individual smartphone user
manual.
Operation
If you receive or make a call while listening to music, the
music is paused until you end the call.
To Frequency
Increase volume repeatedly as desired
Decrease volume repeatedly as desired
Call Functions
Answer / end a call once
Reject a call Hold 2 seconds then release
Redial last call twice
Playback Functions
Play / pause track once
Skip to next track Hold
Go to previous track Hold
Other Functions
Use voice control and once
Reset the Headphones
To hardware reset the headphones, connect the USB
cable to a charging source.
Hints and Tips
Product not working:
• Recharge the product.
• Ensure the product is switched on.
• Ensure your Bluetooth-enabled device’s wireless
function is active.
• Ensure there are no other wireless devices in
discovery mode.
• Move the product closer to the device.
• Pair again the product and the device.

Specications
Earphones
Model GTCIBTB21 / GTCIBTP21
Sensitivity 93dB +/- 3 @ 1KHz
Impedance 16 Ω
Rated Input DC 5V 100 mA
Frequency Response 20 Hz – 20 kHz
Frequency Band(s) 2400 – 2482 MHz
Max. Radio Frequency
Power Transmitted
8 dBm
Bluetooth Interface Bluetooth 5.1
Bluetooth Profiles A2DP, AVRCP, HFP, HSP
Operating Distance Up to 10m
Battery Life Up to 14 hrs
Charging Time 2 hrs
Operation Temp. 5 – 40 °C
Net Weight 15.8 g
Batteries
Model 581013A
Battery Type Li-ion rechargeable battery
Battery Rating 3.7V 50mAh 0.185Wh
Number of Battery 2
Designation Code 1ICP6/10/13
Manufacturer Dongguan Sunly Battery
Technology Co., Ltd.
Dimension 10.2 × 10.8 × 7.8 mm
Net Weight 2 g
Switching On/O
To switch on, press and hold until the blue indicator
lights up once.
• If the earphones are already paired with a Bluetooth
device before, it will automatically connect with the
last paired device when both are in pairing mode.
To switch o, press and hold until the red indicator
lights up once.
Bluetooth Pairing
1. Ensure the earphones is switched o.
2. Press and hold for 8 seconds to enter Bluetooth
pair mode. The red and blue indicator starts ashing
rapidly and alternately.
If no Bluetooth device is paired within 5
minutes, the earphones will switch o.
3. Activate the Bluetooth feature on your Bluetooth
device and start searching. Then select “GTCIBTB21”
or “GTCIBTP21”.
4. If necessary, enter the passcode, “0000”, to pair and
connect the earphones. Some device also ask to
conrm the headset connection after paring.
5. The blue indicator will blink and the earphones
will beep after you have successfully paired the
earphones.
Not compatible with all smartphone brands;
please check your individual smartphone user
manual.
Operation
If you receive or make a call while listening to music, the
music is paused until you end the call.
To Frequency
Increase volume repeatedly as desired
Decrease volume repeatedly as desired
Call Functions
Answer / end a call once
Reject a call Hold 2 seconds then release
Redial last call twice
Playback Functions
Play / pause track once
Skip to next track Hold
Go to previous track Hold
Other Functions
Use voice control and once
Reset the Headphones
To hardware reset the headphones, connect the USB
cable to a charging source.
Hints and Tips
Product not working:
• Recharge the product.
• Ensure the product is switched on.
• Ensure your Bluetooth-enabled device’s wireless
function is active.
• Ensure there are no other wireless devices in
discovery mode.
• Move the product closer to the device.
• Pair again the product and the device.