III. Basic operation
Charge your headphones
• Plug one end of the supplied micro-USB cable to your headphones micro-USB
port and the other end into the USB port of your computer or to a 5VDC USB
adapter to fully charge the battery.
• Make sure that the headphones are fully charged before using it for the first time.
• The headphones battery has to be charged for at least for 3 hours.
• While the headphones are being charged, the LED glows red.
• When the battery has reached full capacity, the LED will turn off.
Note: When the battery level is low there will be a sound indicating the battery
needs to be charged.
IV. Advanced operation
Note: Before installing this product, please make sure your device is Bluetooth®
compatible.
Pairing the headphones with your mobile device
1. Press and hold the power switch on the headphones to turn on the device.
2. Next, set your Bluetooth® mobile device to "discover" the wireless headset.
3. Place the headphones and your phone not more than one meter away from
each other.
4. The LED light will blink alternatively red and blue to indicate that the headphone
has entered into the pairing mode and that it is ready to be detectable for the
first time.
5. On your mobile phone, tap the newly discovered audio device (KNH-250) being
displayed in the Bluetooth® list.
6. When the mobile device asks if you want to pair with it, click Yes or OK
to accept.
7. If you have a lower Bluetooth® version, you may be prompted to enter the
passkey 0000 (4 zeros).
8. If pairing is successful, a tone will be heard and the LED will slowly blink blue. If
after 60 seconds the pairing process fails, please repeat steps 1 through 7
described above.
9. You only need to pair the headphone with your phone once, as it will re-connect
with memorized devices automatically.
Using the wireless headphones
1. Answering and ending a call
• When there is an incoming call, you will hear a ring and the LED blinks
alternatively red and blue.
• Briefly press the Multifunction button to pick it up. You may also press the
answer button on your cellular phone to take the call.
• To end a call, simply press the Multifunction button once again. Likewise, you
may also finish the call directly using the end key on your cell phone.