I went ahead and bought this jawbone to see if using it would motivate me to be more active and get more exercise. I have been using it for about 10 days and am very happy with it. It isn't the latest and greatest from Jawbone, but the app on my iphone 5 works great. I am just using the step counter and sleep tracker with it and they seem to be pretty accurate. It doesn't syn via blue-tooth, so I have to plug it in to my phone to update, but it works great and I am not constantly checking my progress throughout the day. It is very comfortable to wear, I have accidentally jumped in my pool with it on and into the shower a few times, and it continues to work fine. Battery life isn't as good as advertised (10 days), but it charges quickly, so no big deal. I think it was a great buy on Blinq. Might upgrade to a Jawbone 2 or 3 later, but more than satisfied with this one for now.
After several tries I finally got it to download into my smart phone. It worked ok for about 3 days and then stopped downloading again. Yes it's fully charged. I gave up and it sits on my table gathering dust. Waste of money. This is the 3rd jawbone I've had. They all stopped working eventually.