Men’s automatic watches can vary a lot, specially when it comes to a diver watch. Certain brand name watch companies may say that they have diving watches that are water resistant anywhere from 100-4000 meters.
Any watch suitable for diving is able to assist you in recreational scuba diving. Safe diving limits are 130 feet deep, so why does it matter?
The ratings provided in a men’s automatic diving watch come as a result of test in a controlled environment, so even though the watch says it is water resistant for 130 meters underwater that doesn’t mean that if the water or the watch moves that it will not be damaged since the watch was never tested to do that. Some of the things you need to take into account are:
The watch case has to be strong enough so it can withstand high amounts of pressure, a strong material would be 316L stainless steel or titanium.
Seals needed to keep the places where the case opens from being water damaged. The seals are called o-rings or gaskets and are made of rubber or another synthetic material.
Most diving watches have a screw-down case-back and crowns. When a case-back is screwed-in it seals better than if it were to be pressed in, the same can be said with the crown.
When you want to decide if a diving watch you look at is right for you, you should look at the water-resistance level. If it is at least 200 meters it will be fine, that is around 20 atm (atmospheric pressure).
The way to pick the best diving watch is by the method more is better, if the watch is water-resistant up to 200 meters but you see a watch for couple dollars more that is good for 300 meters underwater than the second watch may prove to be more resistant and capable to withstand water better.