Similar to a pedometer, this is the device that helps swimmers easily track the distance and duration of their pool workouts. Users simply enter the pool length (25m or 50m), stroke style (freestyle, backstroke, butterfly, breaststroke) and weight prior to swimming a single lap for calibration. The aquameter automatically counts the number of laps, number of strokes, elapsed time, and calories burned, allowing you to focus on your swimming performance instead of a clock. The device can save data for the last seven workouts in its memory to help you monitor your progress. The face has a large LCD panel with a backlight for easy viewing underwater. It also functions as a standard wristwatch with date and alarm. Polyurethane band. Water resistant to 150'. Battery included. Case: 1 3/4" diam. x 1/2" H. (7 oz.)