Lap Track - Underwater Lap Counting and Timing. A personal underwater clock that counts the number of laps you swim records the time it took to complete each lap your total time and an estimate of the amount of calories burned. Simply press the Lap Track to start and again each time you complete a lap and the Lap Track will do the rest. Each time the Lap Track is pressed your split time will be displayed for 5 seconds so you can check your times as you swim. The entire Lap Track is a button so you wont need to worry about slowing down to press any small buttons. The Lap Track allows a swimmer to keep track of laps split times and calories burnt all while continuously swimming. The Lap Track also has a lap count down feature which allows you to set the amount of lap you wish to swim then the Lap Track will count down your laps until you reach zero. This feature is especially useful for swimmers using the SwiMP3. Now you can finish your workout without ever giving a thought to ho...