About an hour ago I went to take a shower and took off my Watch. The battery was showing that it was down to 82% from when I charged it yesterday. I know I shouldn't but I generally charge the thing while I'm showering, which puts it back at 100%. I know it's waterproof down to something like 15 feet, But the band (metal) started to bleach out after a year or so of immersion. I almost never took my first watch off, it went in the swimming pool, the hot tub and the ocean. I don't think I can get more than two to two and a half days on a charge, but that's plenty.
What do I use it for? Weather and outside temp, stock ticker, music, phone calls, Health info tracking, texting, sleep analysis, workouts, Golf GPS, letting me know when the wife has finished the grocery shopping and is headed home. And more.