You will set the unit up, check the screens and so on, has date and time for no reason (read on) and then tap the start to get a BEEP that can be set to immediate, or random and so forth, all good so far. Now say you take two quick shots at the sound of the beep. It will display the time to the first shot and the time to the second shot. You can review that on the screen. Now if you tap the start to get the BEEP again, you have just wiped out the previous record. The unit claims it has a 99 shot record - well, yes, but only if you keep shooting - who does that? It is useless for tracking your progress or lack thereof - unless you want to stop after each shot string, record the information manually and then go at it again. Why it would have the date and time makes little sense - there are no download capabilities with the unit, no USB port and the memory is wiped every time you tap the timer so what's the point. The product does what it says but that ain't much.