Muff.
Actually, dive watches are useful for more than just diving. If your hobbies or work lead you to encounter sudden shocks, magnetic fields, or chemicals, a dive watch may be for you (See the ISO 6425 Standard for Diving Watches).
For someone like me who works on vehicles often, is a firearm enthusiast and avid shooter, and dissects and repairs (or ruins) the occasional loudspeaker, a dive watch is a good investment.