TIMEX Men's T5K3379J SLEEK 50-Lap IRONMAN 50-Lap Chronograph Interval Timers Watch Indiglo night-light 100-Hour Chronograph with Lap and Split Times, 99-Lap Counter 100-Hour Countdown Timer with Stop and Repeat Dated Training Log with Best Lap, Average Lap and Total Time, and On-the-Fly Lap or Split NULL Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving