Cyband is a smart device that can be worn on wrist; Built-in 3D sensor, vibrating motor and li-ion battery; Can record real-time data of exercise and sleep in daily life and can sync this data with smart phones or PC, leading you to a healthy life; Supports OS and devices: IOS: IPHONE 4S / 5 / 5S, IPOD TOUCH 5, IPAD 3, IPAD MINI 2; Android: Samsung Galaxy S4, Galaxy Note 3 / 2, Xiaomi 2S, all above devices need Bluetooth 4.0+, Android 4.3+;