Local deep scratches on the watch case or strap need to be treated locally before repair, such as the shell side of the watch case, and even a fine small file can be used, and more often, an oilstone is used, and then the deep scratches are carefully bored under a magnifying glass.

It is not difficult to repair the scratches on the watchcase strap with sandpaper yourself, as long as you are careful and steady enough. However, regarding the surface polishing process, it is necessary to use a cloth wheel polishing machine, and it is recommended to send it to the brand after-sales or other watch maintenance institutions for professional treatment.