Watch waterproof rating

The waterproof standards of general watches are divided into: 30 meters, 50 meters, 100 meters, 300 meters, and 500 meters. The waterproof depth does not refer to the depth in the water but the pressure
3ATM: 30 meters waterproof, waterproof for general life, water droplets splashed when washing hands, and raindrops falling when it rains lightly. However, be careful not to take too long, let alone wear it in the sauna:
5ATM: 50 meters waterproof, enhanced version of lifestyle. Wipe with a small amount of cold water;
10ATM: 100 meters waterproof, you can wear the watch for car washing and showering activities, but it cannot be soaked in water;
30ATM: 300 meters waterproof, can be used for swimming activities, but only suitable for shallow swimming. Do not interpret it as being in 300-meter deep water
50ATM: Waterproof to 500 meters, suitable for diving. Based on the depth of one or two hundred meters, it is not recommended to dive deeper.
The waterproof of the watch depends on the waterproof rubber rings on the mirror, back cover, handle, etc. to reach the corresponding standard. All waterproof watches are stamped with "WATER RESISTANT" or "WATER PROOF" in English on the bottom cover. Watches without waterproof marks are only dust-proof and should avoid water