Supersonic PowerX Fit Fitness Band Slim, comfortable and easy to wear/incoming call Alert/water resistant rechargeable Battery (40Mah) Compatible with android 4.3 and above/Compatible with iPhone 4S, iOS 7.0 and above Tracks steps, distance, Calories burned and active minutes/monitor how long and well you sleep Wake up with a silent wake up alarm/LED lights show how your Day is stacking up against your Goal