A flyback chronograph allows its user to reset the stopwatch function’s seconds hand of the watch without first stopping it. This not only allows the user to measure events in rapid succession, but also allows for the measuring of intervals. For example, laps in a race can be timed with a simple press of the flyback pusher, while the aggregate time of the race is still being kept as well. Or you could use a digital stopwatch like a normal person, although I do dream of being at my kid's track meet, walking up to the official timer with his digital stopwatch, flicking my wrist up to display my Daytona, and saying, "back off bro, I got this, down to the 1/8 second." And then my kid would say "that's my dad! he waited on an AD waitlist for 16 months just to time this race!" Watches, creating memories.