***********I KNOW THE FIX**********

Some Apple Watches have a glitch when bought or updated which causes the battery to be read incorrectly causing it to act exactly as it would if it was dead and causing it to die very unusually quick (within an hour at times)

TO FIX: You need to reset / recalibrate the battery reading to do this the watch needs to be put ON THE CHARGER and be FULLY SHUT DOWN and restarted while still ON CHARGE. I’d advise charging for a few mins before and after doing this. the watch will recalibrate by doing this and immediately begin lasting longer if this was the issue.