There is basically no difference from ordinary waterproof watches. They are all waterproof. The degree of waterproofing can only be used for domestic purposes, because it is only water-resistant. If there is no additional meter, it means that it is only waterproof for daily use. The outer surface is waterproof and cannot be soaked in water.
The original English meaning of swatch is a fabric sample, usually the size of an A4 paper. It is a commonly used term in textile business. The "S" in the name "Swatch" not only represents its origin in Switzerland, but also contains the meaning of "second-watch", which means that people can own two or more watches at the same time just like fashion.