Compatible with bluetooth 4.0 Android 4.4 or above iOS 7.0 or above. This incredible band has everything you need with 8 different functions that help manage day to day life.1. Pedometer2. Distance measurement3. Calorie consumption management4. Sleep monitoring5. Time display6. Selfie function7. Reminders (for drinking sitting for toolong waking up) with a silent alarm8. Call reminder SMS reminder (for Androidonly).