Compatible with Android 4.4 and above iOS 8.0 and above bluetooth 4.0. Functions: waterproof touch screen strap replacement date and time display pedometer distance measurement calorie measurement sleep monitor (can manually set any time) caller ID missed call reminder message reminder Facebook Twitter email etc. any social media or any other App in phone notification first 30 characters of a message read on screen accurate continuous heart rate monitoring swimming mode location finder reminder alarm clock reminder task reminder activity reminder turn on/off. App name: H plus watch.