Robic Speed and Sport Timer 180 dual memory recall capacity and a total reading capacity of 1000 times. Use the memory without interrupting timing; memory is instant and complete Choose the current running lap time or split time in lower row of the display. View the memory recall in ascending (1, 2, 3.) or descending (.3, 2, 1) order Professional speed timer in mph or kph. Works at any racetrack in the world. Displays lap number, lap speed, lap time and current lap running time Calculates strokes per minute for pace and cadence training Time of day, alarm and calendar; amber LED backlight for low light Use. One year factory Warranty; lithium battery CR-2032 This is an aftermarket of generic part