Men's Automatic Watch Multifunctional Fashion 30M Waterproof Quartz Men's Watches Silicone Band Sports Watch

Heavy-duty innovative ceramic shell surface, patterned screws and slots are beveled and ground, the tip is rounded and polished, micro-blasted surface treatment/surface frosted treatment/ingenious frosted bevel treatment. 

Mechanical watches have an error of plus or minus 45 seconds, as they are just wound and will slowly stabilize, and need to be isolated from magnets or magnetic objects, etc.

Any watch should not be worn in the shower, seawater corrosion, hot water vapor, temperature changes in the environment, which will lead to the movement into the water vapor leads to failure

Watch cleaning need to use alcohol cleaner, metal cleaner to wipe, rubber strap due to long-term wear dirt, need to use a small toothbrush soap gently clean, do not use with corrosive chemicals, etc.
Mechanical watches need to rotate the crown in a clockwise direction for about 20 turns to complete the winding step when the time slows down or stops.