You wear it on an armband and it measures all of the things, as I understand it, that the Fitbit measures. I sync it with their website daily although it will store two weeks of data and the battery lasts for well over a week. I've lost over twenty pounds since I began using the device. Their advertising says it's like "having a personal trainer on your arm." I figured that was over-the-top marketing BS but there's more than a grain of truth to it. When I get lazy and... Read more →