This Fastime 1 is a triple mode single display stopwatch with extra large (12.4mm) digits. Mode A: Stopwatch: The stopwatch can count up to 24 hours. Timing to 1/100th sec for the first 30 minutes, then in 1 second intervals.With Start, Stop, (Time Out) Resume or Reset function and Cumulative Split time function. ONE/TWO FAST FINISH: Press the split button to take the time of competitor 1. Press the stop button then the split button to show the time of competitor 2. Mode B: Time of day Mode C: Alarm Set: Use this function to set the alarm. Good for single event timing and events where cumulative split times are required.