Hello all, just wanted to add my voice to the mix. I had the same problem. My watch is 15 months old (so it survived the 12-month warranty period, but not by much). I use it for racewalking and swimming, so I bought this specifically for its capacity to track swimming. I use it as an all-day wearable and have loved the long battery life, the sleep tracking, etc. BUT -- despite the fact that it is always on my wrist except when charging, that I have not dropped it, that it has not suffered any major trauma, I had the same experience described here. The waterproofing apparently completely failed. About one hour after that last fatal swim, it started acting like I was pushing the upper right-hand button all the time, then just died. Now, when plugged in, it flickers a mottled grayish screen that shows multiple functions at once that shouldn't all be together. The screen is ghostly in appearance -- the numbers and letters aren't clear, and it blinks on and off. The watch won't respond to anything -- it won't turn on or off, none of the buttons make any difference. It is just dead. I'll be contacting Garmin today. I've been using Garmin products for over twelve years, and I love the consistency of my Garmin Connect account, which tracks me all the way back. I'm NOT happy with the quality of this supposed wearable. I paid very decent money for a watch, and expected it to last me far longer than 15 months. Now that I know I want a wearable, I will research the durability of products, even if it means leaving Garmin.