When it comes to finding a water resistant watch, you need to know what you're looking for and a good understanding of the terminology used to describe the watch.
For example, the Deep Blue World Timer quartz chronograph GMT watch is described as an ideal watch for a global ocean diver. It features what a diver would need - a unidirectional rotating bezel with a diver's scale. The screw-down crown at 3:00 pairs with two function pushers to put the chronograph movement at your command. Finally - and most importantly - are the words you are looking for: Water Resistance: 50 ATM - 500 meters - 1,650 feet. Those are the numbers you need to see to know that this truly is a water resistant watch - one that is made to survive at the prescribed depth.
While you should find the words "water resistant" in any product description, they must also be stated on the back of the watch case or its dial. While you may be more accustomed to the term "water proof," there is no such thing as a water proof watch. water is the term used today.
Behind the Term
Water resistance is stated as a depth (BAR, ATM, meters or feet). It represents the fact that this model was tested in a laboratory to withstand the static pressure for a short period of time, only at the stated depth. Remember that when you actually use the watch, you are putting it under more water pressure than the static pressure. For example, if you dive into the water, the impact on the watch is far greater when it hits the water surface than the pressure when the watch is resting on your wrist underneath the water.
