Got my Space Grey Apple Watch Sport in the mail on April 27th. No damage to the screen or body (I work at a restaurant so my arms and hands especially are prone to getting dirty and bumping into things). I havent damaged the watch or gotten it soaked or even remotely wet though. However, the wrist detect isn't working anymore. Stopped working out of the blue just yesterday morning (May 10th). I raise my wrist to check the time, but i have to tap the screen to turn it on now. I went into the settings both on the watch and on my phone to ensure wrist detect is activated. I also reset the watch by holding the button under the crown. I also unpaired and re-paired my watch to my phone, but all in vein. The wrist detect still wont work. I was in SF and talked to a guy who worked in repairs and he said something along the lines of "just wait for an update...." Im not really happy with having to tap my screen all the time just to check the time and see my incoming notifications, but we'll see how soon Apple addresses and fixes this really annoying bug.