The Atomic Solar Mudman by Casio is mud-, dust-, and shock-resistant enough to survive whatever Mother Nature throws your way. Solar power and multi-band atomic timekeeping make this a great watch for keeping time on the trail. The 46-millimeter case is constructed from durable resin that stands up to typical wear and tear. Comfortable and sporty, the Mudman also features a date-and-month display and is water resistant to a depth of 660 feet.