Most individuals think it is different that, if the water pastime could be used to shop for a watch, why suggest them water-resistant watch more than 100 m. "I have done not dive for a lifetime of greater than 50 meters," a dive instructor say together with the author. In fact, this question is not only present in the general consumers buy watches, watches a few years ago the majority of the master salesman and repair of the watches are also very concerned about this issue, until recently the market movement is taken seriously, began to pay attention to water mark distinction, but not know why.
Whenever the water detail enhanced by 10 yards, it will raise the same in principle as an individual natural environment stress. According to this principle, so that the general watch factory are pressure gauge to test the watches are waterproof. So some watch factory will be marked compression values, namely unit marked bar or atm, to represent the value of its water. 1bar is the same as 1 kg every sq centimeter bear the pressure, it may possibly resist the pressure in the compression 10bar comparable to a interesting depth of 100 m underneath the water exterior that occurs, pressure 20bar water equivalent to 200 meters. Pressure 3bar 30 yards water comparable, which often called the life water. Normally watch the most popular scenario is only labeled "Water Amount of resistance" devoid of water level beliefs, the fact is in line with world-wide benchmarks are regarded to water-proof 20 meters.