This dual USB car charger is the ideal solution for charging your iPad or tablet and most of your other USB devices like (smart) phones, navigation systems, MP3 players and digital cameras through the cigarette lighter of your car! The dual USB car charger works on 12/24 volt and converts them automatically to the 5 volt that USB devices use. You can easily charge your USB devices while travelling by car, truck or boat, without the need of a PC, notebook or wall socket. Combined with the car air vent mount, you can securely attach a phone between 5.5 and 8.5 cm to the car to charge it up while charging. Great kit for a mobile lifestyle!