How does the watch waterproof grade divide?

- May 04, 2018-

1.What does watch waterproof mean?

With regard to the waterproof performance of watches, national and international standards have a clear stipulation: All watches marked with waterproof should be able to withstand at least 2 atmospheres, that is, no water at depth of 20 meters. 30 meters waterproof means that the watch can tolerate 3 atmospheres, and so on. The premise of this standard is that when the test is conducted, it is under laboratory conditions: the temperature is maintained at 20-25 degrees Celsius, and both the watch and the water are at rest. In this case, the watch is qualified if it is waterproof.


2.Watch waterproof rating

Level 1: 30-50 meters for daily waterproofing (Identification: 30M, 3ATM, 3BAR), can resist a small amount of hand-washing, splashing water, and raindrops falling in the rain, but it can't take too long to notice.

Level 2: 100-200 meters, (Logo: 100M, 10ATM, 110BAR) Swimming activity, but only for shallow swimming.

Level 3: 300 meters and above (markers: 300M, 30ATM, 30BAR) for water sports or free diving.


Please note

1, waterproof watch waterproof rating: such as waterproof 30 meters, does not mean you can put underwater 30M, but the watch can withstand 3 atmospheres, and so on.

2. If the watch touches water, it must be wiped dry.

3, do not use the watch in the bathroom and sauna, the way the waterproof apron will affect the temperature of the watch will affect the waterproof function.

4, the watch's waterproof performance is not permanent, the watch may be due to the aging of the waterproof ring or an unexpected impact the handle / case and affect the watch's waterproof.