Timex Men's T5K170 Ironman Traditional 10-Lap Black Resin Strap Watch Indiglo night-light 100-Hour Chronograph with Lap and Split Times, 99-Lap Counter 24-Hour Countdown Timer with Stop and Repeat 10-lap memory recall for effortless review after workout Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving