specifications:<br />overall size: about 10.5x4.5x6cm<br />input: dc 12v-24v.<br />barrel inner diameter: 2.1cm/0.83&quot;<br />barrel inner length: 3.6cm/1.42&quot;<br />usb output voltage: dc 5v<br />usb output current: 2.1a/1a<br />compatible with: all smart phone， gps and mp3.<br /><br />description:<br />* 100%  and high quality<br />* widely used with electric equipment for power supply:vehicle，gps， mobile phone， camera， mp3 (cannot smoke)<br />* wiring kit for cigarette lighters to install in any 12v-24v motorbike， boat， riding mower， tractor or car.<br />* apply to all usb charging mobile phones or other electronic products. run multiple accessories at one time， very convenient and easy to use.<br />* multi-functional product， perfect for travel use.<br /><br />packaged included:<br />1x dual usb power charger cigarette lighter socket splitter 12-24v adapter<br />4x screw<br />4x connector terminal