A:AnswerI don't think that they change the battery on a watch that is probably only a year old. Mine registered as being 100% health so I am not complaining obviously. It seems to hold a charge very well, lasting more than 24 hrs with my usage.
A:AnswerYou get what is listed in the description. If it says S/M that is what you get. Of course, it is a simple thing to change the band for a larger (or smaller) size but you would need to purchase the alternative band separately.
A:AnswerProbably not but the Geek team make sure that it is up to standards. Mine tested at 100% health but I have no idea how old the watch actually is. It looked so new, I question whether anyone wore it regularly.....if at all.