Have been using the Vivoactive 4s for about a month now, and i am wandering if i should call the service for a warranty. Is my battery faulty? I have tried many different combinations of usage and their battery life. Using NO gps, NO pulse ox, about an hour or so of simple activities, NO extra widgets active except from a battery monitor, NO extra applications, just the default stuff, i can't seem to get more than 2 days of battery life from this watch. A battery monitor widget confirms for the long term. That's really not acceptable for a smartwatch, especially at this price. What do you think? All updates are of course installed. How many mahs is the battery on this watch?