10 ATM Waterproof Digital Watch for Swimming and Diving with Multiple Functions of Lap Stopwatch, Alarm Clock, Calendar Backlight

- The water resistance is 10 ATM, this watch usually works 100 metres (330 feet) underwater. The excellent waterproof rating makes it suitable for use in water sports, including diving, snorkeling, swimming, surfing, boating, etc. It is also suitable for wearing during hiking, jogging, cycling or other sports activities. -The integrated lap stopwatch function meets the timing needs of coaches or referees at multi-participant sporting events. -Supports several useful functions such as: alarm clock, hourly chime, calendar and backlight. -Supports display in 12 or 24 hour format to meet the time reading habits of different people. - The watch battery is replaceable. If you find that the watch does not work or the text on the display is not clear, please replace the watch battery in time.