Not all waterproof watches are called diving watches

Under the extreme conditions of the sea, a reliable watch is an important guarantee to control the safety dive and return time. But not all can be waterproof standard can be called a diving watch, a simple waterproof function does not mean that is a professional diving watch.

According to the International Standards of Swiss Watch (NIHS), diving watches must meet the following specific standards:

1. Safety equipment to control dive time

NIHS standards Diving watches must have a safety device that controls diving time. In addition, in order to prevent interpretation errors, the device must also be attached to prevent inadvertent rotation of the design. The watch is best equipped with a minute minute scale diving with the inner ring rotating time, the control device rotating the inner ring should also have a corresponding safe start design.

Clear and legible

Time, rotating the inner diving time, the movement is not only such as the movement must be dark in the dark environment can also be sharp edge, usually this distance (watch and eye straight line distance) is set to 25 cm. Among them, the fluorescence processing is the most commonly used solutions for all major watch companies.

3. Water and salt water erosion resistance

In order to ensure that the watch's core components and strap in salt water immersion environment does not change, diving table waterproof liner, bottom cover and mirror case components should be adjusted accordingly, the common practice is to increase the thickness. NIHS standards diving watch case should reach more than 100 meters waterproof depth.

4 anti-magnetic, shockproof and anti-temperature characteristics

Professional diving watch are equipped with anti-magnetic protection device, because the extremely sensitive balance spring is likely because of the influence of the magnetic field to destroy its precision. Magnetic protection device can make the movement from the magnetic field, vibration and temperature changes, so as to ensure the accuracy of the watch travel time. In addition to the need for temperature changes in the test watch, did not find any phenomenon of steam condensation is a good dive table.

External force characteristics

Watch connecting components should be able to withstand external forces up to 200N.

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