OK so I don't have FULL day of it as it came in late in the day. I've got it registered and have had it on a few hours. I even managed to enter all my food on the site.
At 11 pm I'll sync it up and see how it really works with a reading. I can tell you I went WAY over the calories that it recommends in order for me to lose 2 lbs a week. lol But that't ok for today . I can barely tell I am even wearing it and I love that I can wear the display as a clip on or as a watch.