Total distance display up to 999.99 and interval up to 99.99 Time of day, topwatch, speed and average speed. Time of day display automatically freezes when the stopwatch is stopped making it easy to check rally officials time Calibrate for miles of km Two calibration numbers Speed indication Manually adjustable total distance display. Count up and down facility Split (freeze) function Electronic memory back up Display back lighting Optional remote display for speed, interval distance or average speed. Two probe inputs HR model which measures to 1 metre for road surveying applications. Includes a detachable display, which display the speed or traveled part of distance.