Prepare for picnics, garden events, date nights and anything in betweenGarden accessoriesPicnicware 100M Water resistant: With a drinking water resistance of around 100M you can easily manage most scenarios in everyday life, for example washing fingers, rain, swimming(make sure you tighten the crown when likely into the drinking water). The https://www.watchesworld.com/a-history-of-watch-reference-numbers/