After having a day to screw with it, there's actually one thing I don't like about this mic... there's no on/off switch like there is on my Mitutoyo caliper. It's "auto on, auto off." OK, I appreciate the auto-off, in case I forget, but I'd like to have the option to turn the damn thing off when I store it.
The auto-on is activated by rotating the thimble any little bit at all. Which means, if you have it in a drawer in your machinist's chest, every time you open and close the drawer the mic jostles in the case just enough to activate the damn display again. No wonder people are having battery life issues with it.