Function: Caller ID, information display, real-time dynamic heart rate monitoring, step counts, distance measurement, calorie consumption management, sleep management, sedentary reminder,amount of exercise objectives management, clock and date display, alarm, bidirectional anti-lost (cell phone and beacrlet search for each other), support button and flip the hand for self-timer, OTA upgrades, capacitive touch buttons,The world's original identification of wearable-device Supp