The M1 is shipped with a lightweight headband suitable for most applications. In certain applications, a heavy-duty headband is desirable.
Resolution Install a new heavy-duty headband.
Disconnect the power and video from the M1. With a Philips screwdriver, remove the six screws along the M1 EarPiece housing. Slightly open the housing. There is no need to completely separate the housing. Grab the old headband near the base and remove from the housing.