How to pair the MB 660 with the BTD 800

To pair the MB 660 with the BTD 800 USB dongle, please follow the steps below:

  • Switch the headset on.
  • If the device does not automatically enter pairing mode, press the Sound Effect Mode button for 4 seconds, until you hear tones and the voice prompt “pairing”. (If the device does not enter pairing mode, please ensure that Bluetooth is switched on.) 
  • Press the button on the dongle until the LED starts to alternately flash red and blue.
  • The devices should now pair themselves with one another. 
  • When the devices are paired, the LED on the dongle should flash blue three times. Three red flashes indicate pairing failed – please repeat the steps.


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