Plenty of watches claim to be water resistant and shock proof, but the Casio G-Shock Mudman G9300-1 looks like it could be ready for the end of civilization, and promises to be the last watch ticking. It is water resistant, shock resistant and can endure mud. Lots of mud!
The internals are protected in a hard plastic and steel casing that makes it waterproof to 200 meters, so it can get wet, dirty and endure the outdoors about as well as any sports watch. It offers a digital compass, thermometer, moon graph, full auto calendar with 12/24 hour formats, and even features 1/100 second stopwatch. At $200 it is a true value, especially for the last watch you might need to buy.