【Seamless Integration】Our strap for swatch omega moon watch is intended using a seamless integration curved in your mind. 100M Water resistant: Using a h2o resistance of around 100M you can certainly handle most conditions in everyday life, including washing palms, rain, swimming(please tighten the crown when going in the h2o). https://www.watchesworld.com/a-history-of-watch-reference-numbers/