Motorcycle Cigarette Lighter Power Plug + Duel USB Charger Socket 12 V Outlet Power + Voltmeter Socket Size: 5.7 x 3.5cm(L x D) USB Output Voltage: 12-24V Package Content: 1 x Cigarette Lighter Power Port 1 x 2.1A/1A USB Charger Adapter 1 x Voltmeter Socket