Amazing piece, reads you calories burns & how many steps you walked, it also synchronizes with your apple device through a nile fuel app. Please note that this app is only found at apple store and wouldnt be found on the android play store.
I just received the today and worked out with it. It was very easy to set up. It fits good on me with included extension, which added mabye 1/2-3/4inche. It wasn't uncomfortable and very lightweight. Good Motivation with Fuel, really Pushed me to get 3000 fuel points. Iphone App works great.
I wear the band upside-down with the silver part facing up..
I use this thing every single day. I use it as motivation to exercise more, and i keep track of all of it on my iphone. If you want a helpful workout tool this is the perfect product.