Why are the charging dock and black strap of the Redmi Watch 5 prone to accumulate dust?

If the charging dock and black strap of the watch are prone to accumulate dust, please refer to the following details:
1. The charging dock of the watch has a layer of specification sticker, which helps prevent dust accumulation. It's recommended that you clean it promptly if any dust is noticed during use;
2. The straps are made of TPU and silicone materials, both of which are treated to be hypoallergenic, comfortable, and skin-friendly;
3. However, it's inevitable that they will come into contact with dust during use, with the black strap showing dust more clearly. It's recommended that you clean it promptly when dust is noticed during wear.