... appearance, the portable multifunctional smart wristband is perfect in: tracking steps, distance measurement, calorie consumption management, monitoring your sleep cycle, ... 5, 5C, 5S , and IOS6.1 or above. Android System 4.3 or above(Bluetooth version 4.0).3. Functions ... remind you by vibration(IOS system unavailable).【Message reminder】When new message arrived, the smart wristband will remind you by ...