There are certain features which a diver watch should have. The most important feature that a diver watch should have is its water resistance rating. When you look for any water resistant watch, you should check what the rating is to see it can be used for. Ratings such as 'water resistant to 50 m' doesn't mean that it can be used underwater up to a depth of 50 m at all. The user's guide to the watch should make it clear what you can use the watch for, but won't recommend using at the depth of its water resistant figure. Simply because the water resistance figure is a result of figures arrived at in laboratory conditions as a standard, not real life conditions which can vary greatly. Thus it is not to be worn or used at the depth of the figure of water resistance indicated. A common misunderstanding.
Another feature which you should understand about the diver watch is whether the case back and crown is the 'screw down' type or not. Many dress watches just have a 'push down' crown, which means that you can just pull out the crown and change the time of the watch by just turning it. So if you get such a watch, see whether the crown is screw down or push down. With a watch with a push down crown there is more chance of water penetration if the watch is worn underwater at any depth.
Another feature which you should understand about the diver watch is whether the case back and crown is the 'screw down' type or not. Many dress watches just have a 'push down' crown, which means that you can just pull out the crown and change the time of the watch by just turning it. So if you get such a watch, see whether the crown is screw down or push down. With a watch with a push down crown there is more chance of water penetration if the watch is worn underwater at any depth.
Divers watches are watches which are designed to work underwater. So it means that you can use the watch safely and water should not penetrate it. A typical divers watch has water resistance of around 200 to 300 meters (660 to 990 feet), although the latest technology allows diving watches to be used at greater depths. A true divers watch accords with ISO 6425 which describes features and test standards which make them suitable to be used for diving underwater in depths of more than 100 m. If they meet ISO 6425 mark are shown with the word "diver's" so that one can differentiate the diving watches from lookalike watches, which are not really made for serious underwater use.
You can wear non-divers watches for swimming or scuba diving, but if you do wish to use the watch for scuba diving, then you must read the manual or check its water resistance figure before using it, otherwise you risk it being ruined. Many fakes on the market will display divers watches logos or water resistant figures. These watches are mostly inferior in quality and just attach the logo to the watch to attract buyers.
All diver watches should come with a 'unidirectional' bezel for safety reasons. The bezel will help you to track the time underwater so that you don't cross a certain time limit. You should also understand that watch cases of diver type watches are usually bigger in size than normal watch cases. This is because the watch case has to stand the water pressure as you go deep underwater and be big enough to read easily when visibility is poor.
You can wear non-divers watches for swimming or scuba diving, but if you do wish to use the watch for scuba diving, then you must read the manual or check its water resistance figure before using it, otherwise you risk it being ruined. Many fakes on the market will display divers watches logos or water resistant figures. These watches are mostly inferior in quality and just attach the logo to the watch to attract buyers.
All diver watches should come with a 'unidirectional' bezel for safety reasons. The bezel will help you to track the time underwater so that you don't cross a certain time limit. You should also understand that watch cases of diver type watches are usually bigger in size than normal watch cases. This is because the watch case has to stand the water pressure as you go deep underwater and be big enough to read easily when visibility is poor.
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