THE SQUARE SHAPE FAST WIRELESS CHARGER IS COVERED WITH BAMBOO,THE USB CABLE FITS IN SNUGLY TO THE MICRO-USB SOCKET. THE CHARGER HAS A FLASHING LIGHT AT THE SIDE TO INDICATE IT¡¯S CHARGING. THE BAMBOO ALSO DISSIPATES THE HEAT GENERALLY ASSOCIATED WITH WIRELESS CHARGERS NICELY, AND EVEN HAS WHAT FONESALESMAN CALLS POOR SYNC DETECTION WHICH PREVENTS ANY EXCESS HEAT.THE LOGO CAN BE PRINTED OR ENGRAVED. 3.75" DIAMETER X 3.75" DIAMETER X 0.3" THICK