Desma Co. Ltd. BT15X User Manual

When the headset is in stand-by mode, press the main button for 3 

seconds, you will hear a tone from the speaker and see the Blue light 

flashing. The headset will be turned off. It will also disconnect with 

the paired device. 

 

Pairing with your mobile phone: 

1. Hold the headset and mobile phone in close proximity. 

2. Turn off the headset, lighting indicators shall all be off. 

3. Press and hold the main button key for up to 6 seconds. You will 

hear a tone and the blue LED and red LED will flash at intervals.

 

  At this moment, the headset is in the pairing mode. 

4. Perform a device discovery (search or scan) from the mobile phone. 

For details about device discovery consult your phone’s user guide. 

5. Enter the pass key “0000” to pair the headset with the phone 

(Pairing is successful when the headset blue light is flashing) 

6. Link your headset to the mobile phone to establish the audio 

connection. You can now place and receive calls directly on your 

headset. 

7. If you want to quit the pairing mode, please press the main button 

again. 

You can use the phone as usual to dial a number. The tones and audio 

signals are automatically transferred to your headset. 

Some phones allow you to use a voice-dialing feature. The voice dial 

function must be activated and voice tags already recorded. Please 

refer to the phone user guide for instructions on storing voice tags. 

1. Press the main button, a tone prompts you to say the name of the 

person you wish to call as entered in the phonebook. 

2. Call out the voice tag name, the phone will automatically dial. 

Press Volume up 2 seconds to redial the number. 

To hand up a call, press the main button. 

A ring tone will sound in your headset. Just press the main button to 

answer the call. 

Press and hold main button for 2 seconds – the call will transfer from 

the headset to your phone. 

Transferring a call from your phone to the headset: 

Generally speaking, just turn the headset power on and then press the 

main button - the call will transfer from your phone to the headset.