Qunqi Car DC Digital Voltmeter + Dual USB 2 Port Charger + DC12V Power Socket Three Port Panel for Boat Car with Wire Car DC Digital Voltmeter + Dual USB 2 Port + DC12V Power Socket + Three Hole Panel item Comes with dust cover Heavy duty construction,Material: ABS + metal The flush mount socket features a dust proof cover and are suitable for charging GPS,IPhone,IPod,PSP The unit has threads all the way so you can fit to slim aluminium or thicker wood/ fibreglass matera Power Input: DC 12V-24V,Output: DC 5V 1A / DC 5V 2.1A