Goji GTCNCPM21 User manual

Hybird Noise Cancelling
Wireless Headphone
Instruction Manual
GTCNCPM21

Read all the instructions carefully before using the unit
and keep them for future reference.
Retain the manual. If you pass the unit onto a third
party, make sure to include this manual.
Earphones / Headphones
• Listening to loud sounds for prolonged
periods of time may permanently damage
your hearing.
• Before putting on earphones / headphones,
turn the volume down then put the
earphones / headphones on and slowly increase the
volume until you reach a comfortable listening level.
• For trac safety, do not use earphones /
headphones while driving or cycling.
Damage
• Please inspect the unit for damage after unpacking.
• Do not continue to operate the unit if you are in any
doubt about it working normally, or if it is damaged
in any way - switch o, unplug from the mains socket
and consult your dealer.
Wireless Devices
• Wireless devices can transmit radio frequency (RF)
energy, whenever batteries are installed and the
wireless device is turned on (If it has an On/O
switch).
Temperature
• Avoid extreme degrees of temperature, either hot or
cold. Place the unit well away from heat sources such
as radiators or gas / electric res.
• Avoid exposure to direct sunlight and other sources
of heat.
Naked Flames
• Never place any type of candle or naked ame on
the top of or near the unit.
Interference
• Do not place the unit on or near appliances which
may cause electromagnetic interference. If you do, it
may adversely aect the working performance of the
unit, and cause a distorted sound.
Battery-Powered Devices
• Always charge in a well ventilated area. Do not
charge under pillows, blankets or on ammable
surfaces.
• Do not operate the product if it has been wet or
otherwise damaged, to prevent against electric
shock, explosion and/or injury. Contact the dealer or
authorized agent.
• Disposal of battery into re or a hot oven, or
Safety Warnings
Wireless Earphones / Headphones
mechanically crushing or cutting of a battery, can
result in explosion.
• Leaving a battery in an extremely high temperature
environment can result in explosion or leakage of
ammable liquid or gas.
• A battery subjected to extremely low air pressure
may result in an explosion or leakage of ammable
liquid or gas.
• Do not short-circuit the product or store it in a
receptacle where it may be short-circuited by other
metallic or conductive objects.
• Improper use of batteries may result in battery uid
leakage, overheating or explosion.
• Do not disassemble the product or remove any parts.
• Never discharge a Li-ion battery at a rate exceeding
the maximum discharge current specied for that
battery.
• Immediately discontinue use of the battery if, while
using or charging the battery emits an unusual smell,
feels hot or appears abnormal in any other way.
• Do not use the product where strong
electromagnetic waves are present. Strong
electromagnetic waves will cause damage to the
product.
• Do not use the product if the temperature is too
high or too low, your batteries may be damaged.
If the humidity is too high, your batteries may be
damaged.
• When the product is charging, keep it away from
direct sunlight, moisture, dirt or abrasive chemical
products (cleaning products etc.).
• Battery life and charge cycles may vary by use and
settings
.
Built-in Battery Care
Rechargeable Lithium Ion batteries are
potentially hazardous and can present a
serious FIRE HAZARD if damaged, defective or
improperly used.
• Your product is powered by a built-in rechargeable
battery.
• The battery can be charged and discharged
hundreds of times, but will eventually wear out.
• Unplug the charger from the electrical plug and the
product when not in use.
• Do not leave a fully charged battery connected to a
charger, since overcharging may shorten its lifetime.
• If left unused, a fully charged battery will lose its
charge over time.
• Leaving the product in hot or cold places, such as in

Safety-Earphones-UK-211118V5
Currys Group Limited (co. no. 504877)
1 Portal Way, London, W3 6RS, UK
EU Representative
Currys Ireland Limited (259460)
3rd Floor Oce Suite
Omni Park SC, Santry, Dublin 9,
Republic of Ireland
Visit Partmaster.co.uk today for the easiest way to buy
electrical spares and accessories. With over 1 million
spares and accessories available we can deliver direct
to your door the very next day. Visit www.partmaster.
co.uk or call 0344 800 3456 (UK customers only). Calls
charged at National Rate.
a closed car in the summer and winter conditions,
will reduce the capacity and lifetime of the battery.
• Always try to keep your device in a cool, moisture-
free environment that’s less than 32°C. A product
with a hot or cold battery may not work temporarily,
even when the battery is fully charged. Battery
performance is particularly limited in temperatures
well below freezing.
• If you plan to store your device for longer than six
months, charge the battery for an hour every six
months to keep it fresh.
• The unit should be fully recharged after using the
device each time. This will keep the lifetime of the
battery.
Battery Warning!
• The battery used in this product may present a risk
of re or chemical burn if mistreated.
• Do not attempt to open the product or replace the
battery. It is built-in and not changeable. Use of
other batteries may present a risk of re or explosion
and the warranty will be terminated.
• Only recharge your battery with the provided
approved USB cable designated for this product.
• Dispose of batteries according to local regulations.
Please recycle when possible. Do not dispose as
household waste or in a re as they may explode.
• Batteries may explode if damaged.
Proper Disposal
• ALWAYS dispose of batteries according to local, state
or federal laws. DO NOT put Lithium-Ion Batteries
in the trash. Consult your local waste authority for
information about recycling or disposal options.
You may be able to bring Lithium-Ion Batteries and
Battery Packs to local stores for proper disposal.
The symbol on the product or its
packaging indicates that this product
must not be disposed of with your other
household waste. Instead, it is your
responsibility to dispose of your waste
equipment by handing it over to a
designated collection point for the recycling of waste
electrical and electronic equipment. The separate
collection and recycling of your waste equipment at
the time of disposal will help conserve natural
resources and ensure that it is recycled in a manner
that protects human health and the environment.
For more information about where you can drop o
your waste for recycling, please contact your local
authority, or where you purchased your product.
Notes for battery disposal
The batteries used with this product
contain chemicals that are harmful to the
environment.
To preserve our environment, dispose
of used batteries according to your local laws or
regulations. Do not dispose of batteries with normal
household waste.
For more information, please contact the local
authority or your retailer where you purchased the
product.
The Bluetooth® word mark and logos are registered
trademarks owned by the BluetoothSIG, Inc. and any
use of such marks by Currys Group Limited is under
license. Other trademarks and trade names are those of
their respective owner.
All trademarks are the property of their respective
owners and all rights are acknowledged.
This unit is designed for indoor use only.
This equipment is a Class II or double insulated
electrical appliance. It has been designed in
such a way that it does not require a safety
connection to electrical earth.
AC voltage: This symbol indicates that the rated
voltage marked with the symbol is AC voltage.
DC voltage: This symbol indicates that the rated
voltage marked with the symbol is DC voltage.

Contents
Unpacking.................................................................. 4
Product Overview...................................................... 5
Charging the Battery................................................. 6
Switching On/O ....................................................... 7
Bluetooth Pairing ...................................................... 7
Operation ................................................................... 8
Noise Cancelling ........................................................ 9
Reset the Headphones .............................................. 9
Hints and Tips............................................................. 9
Specications........................................................... 10

4
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:
• Main Unit
• USB Charging Cable
• 3.5mm Audio Cable
• Carry Pouch
• Instruction Manual
• Safety Warnings

5
9
1. ANC ON/OFF Switch
Turn noise cancelling
feature on/o.
2. ANC indicator
3. AUX IN socket
Connect the 3.5mm
audio cable with
music players or
mobile phones.
4. button
• Increase volume
• Go to next track
5. button
• Call function
• Bluetooth pairing
• Audio playback
6. button
• Decrease volume
• Go to previous track
7. Status indicator
8. Charger connector
9. Microphone
Product Overview
1
2
3
4
5
6
7
8

6
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 Status Indicator
Low battery The red indicator will flash slowly.
Charging The red indicator will light up.
Fully charged The blue indicator will light up.

7
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.
3. Activate the Bluetooth feature on your Bluetooth
device and start searching. Then select
“GTCNCPM21”.
4. The blue indicator will blink after you have
successfully paired the earphones.
If no Bluetooth device is paired within 90
seconds, the headphones will enter standby
mode.
Bluetooth Pairing
1. Ensure the earphones is switched o.
2. Press and hold for 5 seconds to enter Bluetooth
pair mode. The status indicator starts ashing in red
and blue rapidly and alternately.

8
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 Press
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
Use voice control twice
Playback Functions
Play / pause track once
Skip to next track Hold
Go to previous track Hold

9
Reset the Headphones
To hardware reset the headphones, connect the USB
cable to a charging source.
Noise Cancelling
Noise cancelling feature designed specically to block
constant, low frequency noises, and is excellent for
train, or bus travel.
To enable noise cancelling feature, slide the ANC
button to ON position, the ANC indicator will light up.
Although noise is reduced, it is not cancelled
completely.
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.

10
Specications
Headphones
Model GTCNCPM21
Sensitivity 118±3 dB
Impedance 32 Ω
Rated Input DC 5 V 900 mA
Frequency Response 20 Hz – 20 kHz
Frequency Band(s) 2400 – 2482 MHz
Max. Radio Frequency
Power Transmitted
5 dBm
Bluetooth Interface Bluetooth 5.0
Bluetooth Profiles A2DP, AVRCP, HFP, HSP
Operating Distance <10 m (open space)
Battery Type Lithium ion 500 mAh
Battery Life Up to 20 hrs
Up to 12 hrs (with ANC)
Charging Time 1 hr
Operation Temp. 5 – 40 °C
Net Weight 283 g
Features and specications are subject to change
without prior notice.

11
Battery
Model VDL 503035Q
Battery Type Rechargeable Li-ion polymer
battery
Battery Rating 3.7V 500mAh 1.85Wh
Designation Code 1ICP5/30/35
Manufacturer Chongqing VDL
Electronics Co., LTD
Dimension 35 × 30 × 5 mm
Net Weight 11 g
Declaration of Conformity (RER)
Hereby, Currys Group Limited declares that the radio
equipment type [GTCNCPM21] 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.

IB-GTCNCPM21-211118V4
Currys Group Limited (co. no. 504877)
1 Portal Way, London, W3 6RS, UK
EU Representative
Currys Ireland Limited (259460)
3rd Floor Oce Suite
Omni Park SC, Santry, Dublin 9,
Republic of Ireland