How to distinguish waterproof watches?
The waterproof function of the watch is usually divided into 30 meters, 50 meters, 100 meters, etc.30 meters (3ATM, that is, 3 atmospheres) waterproof watch, can be used for daily grooming or use in the rain, that is, water droplets only splash on the surface without any water pressure on the watch. The 50-meter waterproof watch can be used for swimming and general housework, and the 100-meter waterproof watch can be used for underwater work such as swimming and diving.