I have a Misfit Flash. We got it as a free replacement after my brother's stopped working, but he'd already gotten a Garmin thing of some sort, so I ended up with the Flash. It tracks activity and sleep reasonably well, and if you wear it on your wrist it doubles as a watch, although you have to be able to read an analog clock with no numbers to make sense of it. I agree with what the previous posters have said about the fragility of the Flash - the actual device isn't showing signs of damage for me, but the previous one broke within days of first being worn, and the band on mine is definitely having problems where the two materials connect. They shipped it with three bands, which seems like it's going to end up equaling about nine months worth depending on how long this one holds out, and a single-piece clip that's meant to attach it to clothing. What I like about it is the incentive to get up and move. It doesn't remind you at all, but it does provide enough motivation for me. The Shine is a very similar device; my mother owns one, and the main difference seems to be that it's metal and more expensive, and thus it and its accessories are sturdier.