Get ready for picnics, yard parties, date evenings and almost everything in betweenGarden accessoriesPicnicware 100M Water resistant: Which has a drinking water resistance of around 100M you can certainly tackle most circumstances in everyday life, for example washing fingers, rain, swimming(you should tighten the crown when likely in the water). https://www.watchesworld.com/a-history-of-watch-reference-numbers/