The waterproof specifications of general watches are divided into the following categories: 30 meters, 50 meters, 100 meters, 300 meters, and 500 meters.
30 meters: refers to the general life of waterproof, is the splash of water when washing hands, as well as the rain falling when the rain, but the attention can not be too long, not to wear in the sauna.
50 meters: There is no difference with 30 meters. It can be ignored.
100 meters: You can take him to wash the car, shower, but not soaked in water.
300 meters: swimming activities, but only for shallow swimming. (Do not understand it is 300 meters.)
500 meters: You can dive under the water for about 1-200 (Note: Do not do it in accordance with the established value, this may be the limit that the watch can withstand, so do not use this method to test the performance of the table.)