A single button press will turn on the ModMic Wireless. You can plug in the ModMic into its micro-USB charger to turn it on, as well. Obviously, feel free to unplug the ModMic and re-mount it afterwards.
While the ModMic is on, a single press will mute and unmute the ModMic.
To turn it off, press and hold the button for about three (3) seconds. Pressing it any longer might put your ModMic into pairing mode. We do realize the ModMic might be a bit fickle when turning it off. We're addressing this with the ModMic Wireless V2; ETA is later in 2024 (for now).
FYI - if you power off the USB dongle first (i.e., turn off the PC/console/etc.) before turning off the boom, the ModMic Wireless may not pair quickly when you power the PC back on. The simple solution is to make sure to power off the boom first, then cut the power to the USB dongle. Re-pair the ModMic for a full reset, as well.