For soccer (and other athletic) timing specifically. It comes set to 45 minutes, but can easily be set to any other time amount. Timer counts down from 45 min. and at 0.00 automatically starts counting back up so you can easily see how much in to extra time you are allowing. At 30 seconds prior to 0.00, continuous beeper goes off to alert near of end of regulation time, which can be shut off with the touch of any button. Referee Watch can be preset to any number of periods and any length of time per period, making it the perfect watch for adult, youth and indoor games. Our unique Stoppage/Injury timer function makes it also the preferred choice of College and High School referees.