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Manufacture Factory in China
Tel: 86-755-81762723, 81762725, 81762726, 81762727
Addres.cns: 4th Floor, Building 5, Mingkunda Industrial Park, 38 Huachang Road, Dalang Street, Longhua District, Shenzhen 518109, Guangdong Province, PR China
The most important thing about the waterproof of the watch is the sealing ring, or O order, I order, which is made of rubber, nylon or Teflon (Teflon). The joints form a watertight seal. The degree of sealing is the waterproof level. Common labels are: 30M, 50M, 100M, 200M, etc. In addition, the thickness and material of the case are also important factors in determining whether a watch can be safely worn underwater. According to regulations, watches marked with water resistance must reach two air pressures (2 bar). The detection method is: keep the pressure under 2bar for 60 seconds, and the air flow cannot exceed 50 micrograms.
Watch sellers may not label their watches as "completely waterproof". Even if a watch is designed for deep-sea diving, it cannot be claimed to be completely waterproof. That is to say, there is no absolut.