Timing is everything! Allows the coach to measure timing, speed and quickness. When the player removes the ball from the cradle, the built in timing clock is triggered. When the programmed time interval expires ( 3-4 seconds ) the buzzer will sound. If the buzzer goes off before the player releases the ball, the play is dead. Great for timed drills. Features a built in audible timing device, programmable timer and two position ball cradle. Great as a football QB trainer and 7 on 7 football.