I've had the earlier watch and thought that was brilliant but this one is unbelievable. I don't have a problem with over heating or too shorter battery life. Approx 2 days but then like, the last one I had, I would just simply put it on charge before I had a shower. Also great clarity heaps of apps. The buttons feel great. I bought the silver one and a set of black straps which I think makes it look better. Pity Samsung don't let you have that option when purchasing it as it makes a bit more expensive but I'm nit picking. The bezel turns nicely. Sound is clear both music, I like the music feature, and telephone. Did I say I love this watch.