iSTYLE TW64 Bluetooth V4.0 Smart Watch Sport Bracelet Wristband Gym Running Pedometer Fitness Activity Tracker Reminder iOS 6.1+Version, Android 4.3+Version - Greyblue Step counts,distance measuring,calorie consumption management Sleep management,event trigger(water drinking,taking medicine,meeting etc) Call reminder,message reminder,clock,sedentary reminder Anti-lost(positive and negative direction lookup) Remote camera,vibration alarm clock.