Hi all,
I just set up the Fitbit Flex ( a review unit sent to HWZ ).
Upon pairing with the iPhone 5, the app shows calorie burn of 1,3XX when there is 0 steps taken.
Walking to my colleague's desk, which is just opposite mine, registered a total count of 21 steps. A bit inaccurate sia!
The strap also comes off easily, but maybe cos I din secure it tighter or securely.
Based on 10 hours (and counting) of using the FitBit Flex.