ILAME Digital Wrist Watch for Swimming Underwater 10 ATM Waterproof with Multiple Functions of Stopwatch Ride, Alarm, Calendar and Backlight, White

-The waterproof level is 10 ATM, this watch can work normally even if it is 100 meters (330 feet) underwater. Excellent waterproof makes it suitable for wearing in water sports, including diving, snorkeling, swimming, surfing, sailing etc.It is also suitable for wearing it when hiking, jogging, cycling or other sports activities. -The built-in stopwatch function that can meet the timing needs of coaches or referees for multiple participants in sporting events. -Supports various useful functions such as: alarm clock, hourly reminder, calendar and backlight. -Supports 12 or 24 hour format display which can meet different people's time reading habits. -The watch battery is replaceable. If you notice that the watch is not working or the text on the display is not clear, replace the watch battery timely.