Dive watches are At the start specialized devices, below for making your dive safe and keep you alive. So actually you need a no-nonsense Device similar to the LIV GX-DIVER on the wrist, with its drinking water resistance as many as 300 meters and unidirectional bezel to time dives accurately. https://eugenev675zlx1.blognody.com/30171056/not-known-factual-statements-about-watches