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Yes, your phone can tell time, but is it ocean-proof? ... These 13 best waterproof watches tested by our editors are. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 ...
For example, a watch marked 30 metres water resistant cannot be expected to withstand activity for longer time periods in a swimming pool, let alone continue to function at 30 metres under water. This is because the test is conducted only once using static pressure on a sample of newly manufactured watches.
These watches are intended for a current daily use and have to resist to the water during exercises such as the short-term swimming. So finally watches said waterresistant must : resist to a dive in the water in a depth of at least 100 metres (330 ft), have a system of control of time and answer all the criteria planned by the standard ISO 6425 ...
These watches have an additional GMT watch hand and in the case of diving watches can have a rotating bezel with 24-hours markings instead of minute markings used for reading of elapsed time. With the help of the GMT hand and a correctly adjusted 24-hours bezel the time in two different time zones can be easily read without having to perform ...
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1939 advertisement from Jewelers' Circular Keystone magazine of the Gallet MultiChron 30 "Clamshell", the world's first water resistant chronograph wristwatch Reverse view of the Gallet Clamshell showing the 4 screws that compress the 2 part case around the flared acrylic crystal Open view of the Gallet Clamshell showing top part of the two part case and complex Swiss column wheel movement ...
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