Interval Workout Timer, Sports Timer BT-01 with 2" LED Digits for MMA, Fitness, Boxing. plastic Made in USA or Imported Interval Workout Timer with Interval, Work time and Rest time EASY setup Bright signaling lamps: GREEN (go), RED(stop), YELLOW(warning) Large 2 digits, visible 60 ft (20 meters); 99 minutes, 59 seconds, 99 intervals LOUD + Volume control; connection for external audio amplifer for max loudness Remote control; keypad; Count UP or Down; Fight/fitness mode; up to 10 sets