Having a field-replaceable battery makes this recorder much more useful than the M-Audio and others with fixed internal batteries

The battery door and the SD card door both feel quite fragile and feel like they could break at any time when changing batteries, especially if the temperature was below zero

M-Audio microtrack II looks like a pretty nice unit too, but the proprietary (and short-lived) battery is a bad option if you consider the possibility of your player dying when you need it most...and the T-mic is a forced plug-in.