Electrix Auto Car Cigarette Lighter Adapter DC - DC Converter Regulated 500 mA Electric Power Charger UL Listed UL listed. 500mA D/C to D/C Auto adaptor Use car battery - save money Fused for protection. Polarity reversing switch Switchable output voltages Output DC Volts: 1.5/3.0/4.5/6.0/7.5/9.0/12.0 Volts switchable, All voltages regulated except for 12 volts Cord length: 1.8 meters 4 Way + 1.35 x 3.5 Walkman plug + 9 V Snap Plug Gender: All Plugs are female (hole in the center of plug), Do not purchase this item if male plug is required.