Bluetooth Caller ID Display Alert Smart Sport Wrist Band Bracelet for iPhone 5.0/Android 4.3 Color Black Imported Functions:sport detection,smart alert, healthy sleep, calorie consumption, call ID alert, idle alert Support iPhone IOS 5.0 system and Android 4.3 system and above Small size, low power consumption, 20 days standby time Smart alert:call vibration alert, idle vibration alert, alarm Data transmission: Bluetooth 4.0