TOPCHANCES Black Convenient Bluetooth Bracelet with Exercise Steps&iexcl;&cent;Calorie&iexcl;&cent;Distance&iexcl;&cent;Time&iexcl;&cent;Sleep quality Fuctions 1,Health helper:A sport healty system, tracks your daily activity and sleep quality. Make your life more Funny. 2, OLED screen:Show the steps,Calorie,Distance,Time,Sleep quality clearly. 3, Support Bluetooth 4.0 Low energy Technology:utomatically syncs your data to PCs, Macs, iPhone 4S & 5,iPad 3, Retina & mini, iPod touch, and to select Android Phones. 4, IP76 Protection grade:Easy to wear with Water-resistant, wear it all day and night even if swimming, rainning, or wash your hands. Your best activity companion. 5, Build-in USB charing and Silent Vibrate Mode.