Specification: Item Type: Wrist Watch Style: Sport Gender: Male & Female Case Shape: Rectangle Band Material: TPU Control Mode: Touch Screen Screen: 0.66''OLED Battery Working Time: Up to 5 days Battery Type: Lithium Polymer Battery Capacity: 85mAh Synchronous: BT4.0LE Waterproof: Living of waterproof (Not for Swimming or Diving) Bluetooth: BT4.0 Systems: IOS 7.1 version above or Android 4.3 version above. Main Functions: Heart Rate Monitor、 Call Notifiction(For Android)、 Message\/QQ\/Twitter Reminder (For Android) Standard Sports Function(steps、distance calories) Time Display Sleep Monitor Anti-lost Reminder Smart Alarm Clock Smart Unlock(For Android) Sports Information Sharing Sedentary Reminder  Product Size: 46.5mm*23mm*13.2mm Head Size: 36mm*11mm*12mm Language: Chinese、 English   Package include: 1 X Smart Bracelet Watch 1 X USB Charging Dock 1 X User Manual   Notice: The picture is only for reference、please consider carefully before purchase.