I have had my watch about 8-months, in all that time (until now) it has worked about 12-13 days on one charge, moderat use,noticed a while ago battery life time is getting shorter, now “only” about 5-6days, i suspect the update in September has something todo with it… where both watches was updated, both 1 and 2, should never have done it…now its only to hope the next update will fix it, but my experiance and hunc says it may get even worse, because they will surely concentrate the update towards the new watch…..😣 Levi in Sweden