I am not a very heavy user but I am also not a light user and other than one day, I am usually at around 80% battery by 11pm after taking it off charge at 7am. Not bad considering I just charge it every night next to my phone.
If you are worried about the price, how much would you pay for a good chronograph? £300? £400? More? Well this does the same and more so the price is very good.
If you like gadgets, or just want a watch that ypu never need to replace the battery on or set then this HAS to be on your christmas list.
There are only a few apps at the moment but with the product just launching it is not suprising. I was happy to see that all but a couple were free anyway so I have dabbled with a few. I love the fact I can change the watch face so once I am bored and "want a new watch" I can just change the face a bang new watch feel :-)
Oh please do note though, Samsung have never claimed this watch to be water proof, mainly because it isn't as one poor reviewer found out. To be honest I have never used my waterproof watches in water anyway so no loss for me.