The Champion Sports Sport & Referee Watch features a rugged sports watchband, 10 Memory, Bright EL night light display,24 Hour stopwatch. Every workout is stored as a separate recallable run, 12/24 hr. format with alarm and split release feature unlocks after 5 sec. to display current running lap time. Programmable countdown/count up time, recalls 10 cum & lap split to 1/100 of a second, dual timer, Hourly chime and water (up to 300') & shock resistant.