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.
MOOV can coach you though a few different workouts, one of them being cardio boxing. Unfortunately for cardio boxing you are required to have two trackers which doubles the price for the sake of taking advantage of one feature.
The Withings Go fitness tracker uses an E ink screen, the same as what you would find on an e-reader. Rather than being lit like a usual digital screen, it is much more similar to ink on paper. This makes it very easy to read even in very bright conditions or when in the water.
The "Sport Profile" feature allows you to customize what stats you want to see for each type of exercise. For example, you may want the GPS on for running but not for a circuit workout. These preset profiles save you from having to set up the device each time you exercise.