PACE PAL Underwater Pace Clock for Swimmers Digital pace timer for swimmers, triathletes, fitness, coaching, training, timing, exercise circuits, game timer clock. Waterproof to 10 feet underwater High contrast LCD screen with BOLD DIGITS Counts up from 0 to 99:59 and then automatically restarts at 0 3 AAA Batteries included provide 6 months or more of power; custom case also included