I have had a Watch 2 and 6 and swim and casually shower (after swimming) with it on with no problems. The Watch 2 IS water resistant and has the swimming mode in it so it can be used in the water. The water mode (drip icon) has two functions: one is to lock the screen so any casual contact does not launch or change a setting while in the water, and (when you scroll the crown) emits a sound from the speaker to help clear any moisture on/near there when you are out of the pool/shower. The main caveat when showering is to not forcibly direct any water into the speaker or microphone and to not get excessive soap/shampoo in those same holes. The only issues I have noticed is that sometimes after being in the water the speaker is muffled or the microphone does not work (Siri unresponsive), but those clear up after it all dries out. Also, I regularly run the watch under a faucet after I run and don't have any issues from that use.