There are actually specifications provided by the International Organization for Standardization (ISO) to determine what makes a true dive watch. Otherwise, the watch should just be labelled “water resistant” or something similar. The ISO 6425 Diver’s Watch Standards provides key characteristics for a watch to be considered a dive watch: <br> – Minimum water resistance of 100 meters or 330ft – Magnetic, shock and chemical resistance – Adequate readability in total darkness, and an indicator that it is functioning in total darkness (such as a running second hand with a luminous tip) – A rotating bezel that allows the diver to track total time underwater from the beginning of their dive – A solid strap or band that is adequately water pressure resistant – A case made of water resistant materials to prevent corrosion and rusting – A screw-down crown that will keep water from entering the watch <br> |