Meh. I use an old Huawei in a bike phone mount. Lasts a good couple hours on a decent brightness using Nokia Maps or Google maps downloaded. Can always stick a usb battery on the bike to keep it going all day.
and also drains the battery
Accurate enough, I've had no signal issues. Does pretty much what I'd want from a gps. These things are crazy overpriced.
Which isn't fully accurate,suffers signal issues and can't do half the stuff one if these can.