It has a little effect on wrist skin! Don't take it to sleep at night! Look at the hanging watch at home. Wearing a watch for a long time, there seems to be something wrong with the skin there! Can you see the difference in color from other skin? Better take it off! If it is serious, it may cause dermatitis and the like. In places where the skin is exposed to less air and the temperature is relatively high, bacteria are more likely to parasitize and multiply there (just a possible tolerance)! Sleeping "five times" will affect your health. Sleeping with a watch will not only shorten the service life of the watch, but also be harmful to your health. Because watches, especially luminous watches, have radium radiation, long-term accumulation will lead to adverse consequences.