Dual memory stopwatch that stores lap and cumulative times or lap times and speeds for up to 500 laps. Multiple events are kept in memory segmented by date and run number. Other memory stopwatches only keep a single event in memory and when a new event is started all data from the previous event is lost. The ULTRAK data can be printed out by the printer in real time or later it can be printed from memory or uploaded to a computer. The easy to use universal speed and frequency function outputs speed or frequency in any distance and time units the user desires including miles per hour. Other features includes dual countdown timers which are ideal for interval training and automatic split release for monitoring current lap times. You can purchase the stopwatch by itself or with the compact portable printer.