OK, I’ll throw in a couple more things. Mine have a tiny rocker switch on each one, so the left controls the program for both aids, and the right controls the volume. The program switch goes forward and backward (1 to to 2, then 2 to 1). You don’t have to cycle around 3, 4, 5, 6 then back to 1, like in the old days.
If you hold the down volume for 2 seconds it mutes the mics. Press the up volume to start the mics back.
If I’m streaming, phone or TV, and I press down volume on the Bluetooth device, it mutes the mics but continues the streaming. Good for taking calls in a lot of background noise, or for watching TV when other things are going on in the room.
If I get a call while streaming from another source, the call has priority. It mutes the stream and lets me take the call. After the call the stream comes back.