A:AnswerCharger is a USB style cable that is specific to this product and can be plugged into any usb port (computer, wall charger - it does NOT come with the wall outlet to usb adaptor). You do not have to detach the face from the band.
A:Answersince it is a fitbit you can sync it whenever you want- just tell a phone to do so and it should sync no timer needed and you can download the app to monitor everything and such. Hope this helped!