Less of a wristband and more of a sports watch, the Mio Alpha 2 has state of the art EKG-accurate heart rate monitoring, as well as activity tracking to keep up with your active lifestyle. The Alpha 2 also allows you to time laps so that you can beat your personal bests. Connect to many different third party apps to track your data, and with a battery life of up to 3 months in non-heart rate mode, you’ll barely have to worry about it running low.