I put the new OS7 on my Apple watch 5 last night. I got up at 6:00 am and by noon it was 28%. I charged it for an hour and by 6:00 pm it was completely dead. I have only had this watch for 10 months and I could always go all day and still have over 25% battery remaining. I am assuming it has something to do with the new watch face, but I really have no idea. There is no point in even owning it if it is dead when you go to look at the time. This update needs and update ASAP.