My Series 1 Watch got the dreaded swollen battery and the screen popped open. I’ve had the watch for 5 years and it wasn’t holding a charge so not a big surprise. Took it in to the Apple store thinking there wouldn’t be anything for them to do about it. But, for $79 I was shipped a brand new Series 2 watch as a replacement since the battery swelled. I’ve not dealt with another company that is willing to support their tech products after a year let alone 5 years. Apple playing the long game knowing I’ll keep buying their stuff.