Svance Colorfull Plastic Strap Anti-loss Pedometer Sleep Health Monitor Bracelet Bluetooth Sync Sports Wristband-Black Tracks steps, distance,calories burned,quality of sleep,Message notice (only for Android),Incoming call notice, remote camera,find phone, Lost warning, unique alarm. Open the buletooth of your device,load down and install the APP("WristbandApp Fitness" for IOS from Apple Store,"WristbandApp" for Andriod from google Play Store),connect bluetooth with wristband then sync with the APP,you can keep your records in the APP forever. Remote camera operation:Open the APP-skip the connction-setting-remote camera-press the enter key of wristband-take photos-save the photos. Bluetooth 4.0 vision with high performance and low power consumption.compatible with IOS6.0 or above and Android4.3 or above.Provides the motivation you need on your wrist to move more, sleep better, and improve your fitness. The wristband would calculate the data when your arms or legs move even though you do not walk or do sport,so the step track and calorie data is not 100% exact sometimes;Please keep the APP open so that it could sync with the bracelet and please keep the APP running in the background when you want to sync the data.