CRACKING ISO 6425

DIVE WATCHES ARE REGULATED BY ISO 6425 AS FOLLOWS:

UNIDIRECTIONAL BEZEL

The bezel is not only rotatable but also marked with a five-minute elapsed time indicator. This is extremely useful to mark dive times.

WATER RESISTANCE

The minimum water resistance required is 100 meters. It is also advised not to pull a watch crown during a dive to prevent water penetrating the watch.

GLOW IN THE DARK

The watch can be read at a minimum distance of 25cm in total darkness. This is where the Super-LumiNova glow-in-the-dark coating comes in.

CASE RESISTANCE

The watchcase has to withstand rust, corrosion and changing temperatures. The watchband can be made of either rubber or stainless steel.

RUNNING TIME

There should be a time indicator that shows the watch still functioning during a dive. That is why most dive watches have a seconds hand.