Deceptively simple in design, the G-Shock Referee from Casio has all the features of a great sports watch. Made for men and women, this unisex digital timepiece has an attractive, matching white bezel, case, and resin band. The watch comes with a daily alarm, auto luminescent backlight with afterglow, auto-calendar, referee timer and stopwatch. There are nine preset start timers: 10, 12, 15, 20, 25, 30, 35, 40, and 45 minutes. This shock-resistant watch is also water resistant up to 660 feet. The included battery lasts approximately five years.