Alright, take a look at this screenshot. His Apple Watch Sport 42mm has been on for 1 day and 11 hours, with a usage time of 3 hours and 36 minutes. At the moment of taking the screenshot, his battery was at 18%. So that means that he can use his watch for two full days without charging. Now my question is... how? I can get around 15 to 19 hours out of my Watch, with minimal usage (Just checking time sometimes, and seeing notifications, around once or twice an hour). What surprises me even more is that low usage he has. After two full days, his Watch has a usage of 3 hours and 36 minutes, while I got that same usage after 15 hours. He doesn't seem to use his watch more or less than mee, just checking notifications sometimes, and checking the time. So, how is this possible? The main difference is that I got a 38mm, and he has a 42mm, but that shouldn't make such a big difference in battery life, right? I'm especially wondering how it's possible that my usage time is the same as his in 15 hours stand-by, while it takes him 35 hours in stand-by, and I am definitely not using my watch with screen on for 3 hours. So how can I decrease that usage time? I hope someone has some suggestions, because I want that battery life as him, would be a dream coming true, right?