Posted: 25/01/2015 at 15:32
I had the Nike+ watch for a few years which promised a lot but didn't really deliver. I've just swapped it for a Sony Smartwatch 3 which runs a standalone Runkeeper app so you don't need to take your smartphone out with you (it's the only smartwatch, as far as I am aware, that has it's own built-in GPS). It also stores about 5GB of music.
It's early days for it so far but I haven't had any issues and it's also a very fancy gadget if, like me, you like that sort of thing.