General Spec Color black Input Voltage 12-24V Output 5V Plug dual USB ports Function replaceable charge plug Compatibility suitable for iPhone 3G/3GS/4G, iPod series except iPod Shuffle compatible with any phone, MP3, PDA with USB port Others come with 1*US plug converter, 1*EU plug converter, 1*UK plug converter and 1*Australian plug converter for use Features Dual USB ports for connecting  two external devices via USB cables. Replaceable charge plug design. Charge directly by car cigarette lighter charger or indirectly via USB cable. come with 1*US plug converter, 1*EU plug converter, 1*UK plug converter and 1*Australian plug converter for use. Suitable for iPhone 3G/3GS/4G, iPod series except iPod Shuffle. Compatible with any phone, MP3, PDA with USB port.