There may be a slight odor when Xiaomi Watch S3 is unpacked. Plastic products and packaging materials usually have some plastic smell due to their materials and other factors. When the product is stored in the sealed space of the package for some time, the odor will accumulate and the product will not open. It may be relatively obvious when it is placed in the box. Usually, the smell will disappear naturally after being left for a period of time, and will not have any impact on the human body and functional use.