If you are one of the crazy people competing in the Tough Mudder type races you might need a Casio G-Shock GW-9300 Mudman Watch. The Casio GW-9300 Mudman is a typical tough and rugged G-Shock watch but is also mud friendly. Some cool features on the watch are moon data, a temperature readout, a digital compass, an automatic calendar, bearing memory, and multiple alarms.