I bought the beautiful wrist bracelet, with the delicate chain, because the jewelry I wear is important to me and fit bits never quite look right. I like the way this bracelet looks, and I love that you don’t need to charge it because it’s battery driven. It worked perfectly for a few weeks but suddenly there is no data when I sync the bracelet. That’s been the case for three days now. I was hoping for simple and reliable. I have two different iPhones (UK, US) and frequently switch countries, although I shouldn’t think that would matter. It’s a simple program that really only tracks steps and the number of hours in bed, which is fine for me. Such a simple program shouldn’t have any glitches though.