Resetting and clearing the pairing list of the MB 660

To perform a factory reset with the MB 660, please take the following steps:

  1. Turn the headset off.
  2. Press the Sound Effect Mode button for 4 seconds.

Clearing the pairing history of the MB 660

To clear the pairing history of the headset, first ensure that Bluetooth functionality is switched on, and then please perform the the following steps:

  1. Turn the headset off and on again.
  2. Press the Sound Effect Mode button for 4 seconds.
  3. You should then hear the prompt “Phone x disconnected” followed by “Pairing”. The headset will now enter pairing mode.
  4. To clear the list of previously paired devices, now press the Sound Effect Mode button again for 4 seconds.
  5. You should then hear the voice prompt “Pairing list cleared”. The headset will once again enter pairing mode.