The watch is waterproof, you know

Why can't waterproof watches be worn for hot showers or hot springs and saunas? Because the water molecules of hot water are smaller than the water molecules in cold water, it is easier to infiltrate the core and cause damage.
 
Take off your watch (do not put it in the bathroom) in hot water or hot spring and sauna, and do not press any buttons on your watch in a humid environment or water.
 
In the process of long-term use of waterproof watch, the crown seal rubber has been worn out due to multiple extraction of needles; The waterproof ring of the bottom cover is aged or corroded by sweat; The adhesion of the glue between the surface and the surface of the surface is decreased and the aging phenomenon occurs. The above factors will lead to a decrease in waterproofing performance. Therefore, waterproof watch may no longer be waterproof after years of use.