Recs.
Updated
Moov Now is an affordable fitness tracker that offers lots of functionality. It tracks swimming, has an amazing battery life, and motivates you with a virtual audio coach.
SpecsUpdate
Pros
Pro Real-time audio feedback during runs
As long as you have your phone with you, the fitness tracker will provide real-time feedback based on the workout you selected (walking/running, cycling, swimming, home workouts). Such feedback includes pace tracking (if you are above/below pace it will tell you how far off you are), as well as workout-specific feedback (for example, while cycling it can suggest when you should switch gears).
Pro Can coach you through workouts
While watching the screen on your phone, Moov Now fitness tracker can take you through workouts at home. Such workouts are push-ups, sit-ups, and cardio boxing. Cardio boxing requires 2 trackers (one for each wrist), but works similar to guitar hero where you swing as the icons move towards you.