In daily life, people who wear a watch usually take off the watch especially when washing their face or at work, worrying that the watch might touch water. In fact, this worry is unnecessary, because most watches have general waterproof performance. The waterproof specifications are different, and the size of the waterproof ability is relatively different. So, is the quartz dress watch waterproof? What is the grade standard for waterproof quartz watches?
The waterproofness of the watch depends on the waterproof rubber ring on the mirror, back cover, and the handle to reach the corresponding standard. The question of whether a quartz watch is waterproof or not can not be generalized. Among them, some are waterproof and some are non-waterproof. It can be regarded as a good watch that can be waterproof to 30 meters. Generally, there is a waterproof mark for waterproofing. If it is not waterproof, there is no waterproof mark, and waterproof quartz watches cannot be adjusted in water. All waterproof watches are marked with the English words "WATER RESISTANT" or "WATER PROOF" on the bottom cover. Watches without water-resistance mark are only dust-proof and should be kept away from water.
Regarding the waterproof performance of watches, national and international standards have clear regulations: All watches marked as waterproof must withstand at least 2 atmospheres, that is, no water can enter at a depth of 20 meters. Water resistance of 30 meters means that a waterproof quartz watch can withstand 3 atmospheres, and so on.
The premise of this standard is that the test is under laboratory conditions: the temperature is maintained at 20-25 degrees Celsius, and the watch and water are in a static state. In this case, if a waterproof quartz watch can be waterproof, it is qualified.
In terms of physical phenomena, every 10 meters of underwater depth increases the pressure of 1 atmosphere. When the pressure inside and outside the watch case is uneven, the watch body is prone to bursting. Therefore, the general watch factory uses the "pressure value" to test the waterproof function of waterproof quartz watches, and the compression value (in BAR or ATM) is used to indicate the waterproof depth