The AST Fastime 20 is a stopwatch with a 10 lap memory and dual display which shows current cumulative running time and either lap time or cumulative split time. The watch is splash and shock resistant making ideal for Motorsport use. A rear access hatch makes battery changing easy. 10 lap memoryClear, easy to read dual displaySplash and shock resistantThe Fastime 20 stopwatch has the following features:Stopwatch - Counts up to 10 hours with a 1/100th of a second accuracyRepeating Countdown Timer - Shows the target time, number of repeats and the counting down time. A beep indicates each repeat.Pacer Function -  Ideal for measuring a required number of actions per minute between 5 and 50 paces per minute. The display shows the target count per minuteTime Of DayAlarm