The main reason I chose this unit was that it's hyped as USB compatible. Don't be mislead here: This does not use a USB mini charger like the Motorola Razr, instead it they give you a little adapter that fits into a USB computer plug. Therefore the unit cannot be charged unless you have one of their devices. I thought it made infinite sense to have a universal charger for headsets, cameras, palm pilots, cell phones etc. This is NOT what you get here.