My new watch says it is water resistant, but what exactly does that mean? And how do I care for a water resistant watch?
A watch marked as water resistant without a depth indication is designed to withstand accidental splashes of water only. You should not submerge such a watch in water at any time. Increasingly higher acceptable depths, normally indicated in meters, usually indicate higher levels of water resistance.
There are a variety of different ways to make a watch water resistant. All such watches use "O" rings or rubber gaskets to seal the back of the case. A watch with a back that screws onto the case provides a higher degree of water tightness. Some crowns (the "winding stem") actually screw into the case, which increases water resistance even more.
Watch manufacturers use other terms to measure water resistance: