Casio Men's G9000MX-2CR G-Shock Mud Resistant Blue Digital Watch Reliable quartz movement Mud Resistant with Color Variation, Dual EL Backlight, 1000 Hour Stopwatch, Shock Resistant 5 Multi-function Alarms, Countdown Timer, Twin Stopwatches World Time (48 Cities), Dual Auto EL Backlights w/ Afterglow Water resistant to 660 feet (200 M): suitable for recreational scuba diving