Compatible with iOS / Android and all BT devices; Mobile phone calls synchronous: call synchronization, when a phone call is ringing, the Watch will vibrate alert and caller ID, not need to pick up your mobile phone; Mobile phone contact synchronization: when the Bluetooth connection after the mobile phone, can synchronously based on smart mobile phone's phone book, not need to get out your mobile phone, you can query or call with the watch; Mobile phone pedometer, stewards to your health: wour private health management experts; Help you to monitor daily motion detection, motion time distance, length, number of steps, energy consumption etc.; Allows you to enjoy the sport at the same time, help you to reachthe goal of health; Sleep quality monitoring: it can monitor on your sleep quality, help you to improve the sleep quality; You can view and manage your APP in mobile terminal sleep detection information; Be less electricity: use ultra low power CPU + 250mAh large capacity battery, with a standby time up to 120 hours, continuous talk about 3 hours.