50M waterproof design (Note: 1. Not suitable for swimming, diving, shower, etc. 2. Do not operate any buttons when the watch in water), especially suitable for outdoor sports use. Material: durable hard plastic (watch case), stainless steel (back case) and soft rubber (watchband). Adopts precise quartz movement and LED digital movement to display dual time at the same time via the watch hands and LED digits, ideal for overseas traveling. Can display date, week, day, hour, minute, and second. 12-hour /24-hour time format for choice. Support alarm clock, hourly chime and stopwatch functions.