Function
Rubber, Steel, Leather, chronograph, Stainless steel, ALLOY, Lighting, Calendar, Alarm Clock, Week, MONTH, Power Reserve, Remote Control, Countdown, Silica Gel, Sleep Tracker, Speed Measurement, Fitness Tracker, Small Second, Passometer, Call Reminder, Push Message, Message Reminder, Heart Rate Tracker, Interactive Music, Big Three Needles, Visual control, Gesture control, Blood oxygen monitor, Real Blood Oxygen Monitoring