Getting started
Power Supply
The unit is powered by a built-in, lithium-polymer rechargeable
battery. Charge the built-in battery for at least four hours before
To charge the internal battery, follow these steps:
1. Connect the smaller end of the supplied USB cable to the
MICRO USB jack.
2. Connect the other end to a powered USB jack on your computer
or an AC power supply (not included).
3. The INDICATOR LED indicator will change color to red
during charging.
4. When fully charged, the INDICATOR LED indicator will
turn blue.
Low Battery Warning
When the battery voltage drops below 3.0 V, there will be a
warning beep every 60 seconds.
voltage drops lower then 2.9 V.
Warnings:
• While using the built-in battery, the environmental temperature
should be 5° C (41° F) to 35° C (95° F).
• To get the longest service life for the built-in battery, charge at
room temperature.
• Attention should be drawn the environmental aspects of
battery disposal.
• Battery shall not be exposed to excessive heat such as sunshine,
to work.
• In order to prolong the battery service life, please charge every
6 months.
• Immediately charge the battery if the headphones are left
unused for a lengthy period.
• The battery is original to the headphones. Please do not attempt
to change the battery by yourself.
1. Long press the POWER/PLAY/PAUSE button to turn ON the unit.
The INDICATOR LED indicator will light on.
2. Long press the POWER/PLAY/PAUSE button again turn OFF the
Adjusting volume
Short press the FORWARD/VOLUME and BACK/VOLUME buttons
to increase or reduce the headphone volume. When the volume
reaches maximum, there is a warning tone.
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1. Adjust the headband and arm of the headphones,
exposing 2 – 3 cm.
2. Place the headphones over your ears and head with the
headband in the middle.
3. Tight the headband and arm until the ear cups cover your ears
ANC (Active Noise Cancellation)
The ANC (Active Noise Cancellation) function is available in both
wired and wireless conditions. The ANC circuit must be switched
To switch on the ANC circuit, press and hold the ANC button for 1
second. The INDICATOR LED will light green.
Bluetooth pairing
1. To switch on Bluetooth, press and hold the POWER/PLAY/
PAUSE button for about 3 seconds. The INDICATOR LED
indicator will blink blue and red alternately to indicate the unit
is in pairing mode.
2. On the Bluetooth device, enable Bluetooth and select
“NC-6602” from the Device List. (Refer to the user manual
of your Bluetooth device for detailed operations.)
