Why does the bottom of the Redmi Watch 5 have scratches?

The bottom of the Redmi Watch 5 is made of a composite material consisting of a nylon (PA) base material and 55% glass fiber (GF). Its stiffness is strong, but there is still a risk of surface scratches due to daily use.
If the bottom of the Redmi Watch 5 has scratches, please refer to the following details:
1. When wearing the watch, try to avoid contacting with other hard or sharp objects to minimize the risk of scratches on the case back;
2. When the watch is not being worn, place it in a soft, clean cloth pad or watch case to avoid friction with hard objects;
3. Clean the watch bottom regularly to remove dust and stains, which will help minimize the scratches.