Robic SC-554W 30 Memory Speed Timer Like having two timers in the same product a world class 30 Dual Memory stopwatch with a versatile racing speed timer Lap, split or dual split stopwatch with 30 dual memory recall and lap counter up to 1000 readings Memory can be recalled in ascending (Up) or descending (Down) order Speed Timer in MPH or KPH can be used for any motorsports event at any Racetrack or Speedway in the world Fastest and average lap times; stroke rate calculator in strokes per minute