It has two movements: digital and quartz movement to keep time more accurate. This sports watch has many functions: back light, alarm, chronograph, digital date & week display, stop watch, and dual display of hour/minute/second. 50m water-resistant, so you don't have to worry about water. Warm orange backlight makes you watch time clearly at night. Perfect for school students and people who loves exercise and outdoor activities like: mountaineering, swimming, running etc.