Apple Watch SE has a water resistance rating of 50 meters underneath ISO conventional 22810:2010. Which means that it may be used for shallow-drinking water functions like swimming in a very pool or ocean. Apple Watch SE shouldn't be used for scuba diving, waterskiing, or other activities involving high-velocity water https://www.jowissa.com/de-na/products/virtuo-swiss-automatic-watch-j4-553-l