The Swimmer's Performance Monitor.

This submersible chronograph allows swimmers to monitor their performance during pool workouts without the worry of losing count of laps or having to check a watch or timer outside the pool. Every time you complete a lap, simply press the monitor's face to register a lap and display your split time on the easy-to-read LCD (uses 1 1/4"-high numbers). It also displays accumulated time for up to 50 laps and records the time you take to complete a pre-determined workout. It stores lap pace, best lap time, calories burned, and more, allowing you to compete against your personal records. Includes dual time and alarm functions for work outs while traveling to different time zones. Easy to use, it mounts above or below the waterline using suction cups (two additional suction cup sets included for tile that is more porous), or it can be suspended from an L-brace held in place by an included tote filled with water. Includes carrying lanyard and two AAA batteries. 5 1/2" Diam. x 1 1/2" D. (1 1/2 lbs.)