Because we are likely to continue to use it for a long time..... Everyone is familiar with digital watches, which have sold a lot due to the fact that they are resistant to acceleration and mechanical shock, because their performance has become a brand name. Is that digital watch really shock-resistant? Why was the mixed fiber devised? After several years Cotton is hard to dry artificial natural mixed function comfortable Is that digital watch really shock-resistant? Someone wanted to buy the watch and see if it was really shock-resistant, and when he hit it on the ground, it seemed to break. He was shocked. Well, since it has fewer parts and fewer assembly processes than a wristwatch with mechanically moving hands, it is not a mistake to think that it has excellent mechanical strength. Nonetheless, there are some caveats with that digital watch. It is the aging of the surface of the body and belt. Why was the mixed fiber devised? Afte...