Power Socket .UV stabilized nylon housing with rubber splash proof tight fitting front cap .2 pole nickel plated brass terminal connectors .Twist-and-Lock locking socket， allows a suitable power plug (not included) to lock into place. Works with all 12 volt accessory plugs Dual USB Charger .Comes with front cap and heavy duty construction .UV Nylon Body DC Voltmeter .Display: segment LED digital tube， lamp display is red .Monitors the state of your battery between full charged and discharged .Can indicate a poor or bad charging system .The meter has easy to read LED segments and connect to your 12 volt systemSpecifications:.Color: Black.Size: 15*4.2*3cm.Material: High Quality Nylon Plastic Socket Body.Waterproof Rate: IP44.Input Voltage: 12V.Output Current;10mA.USB Socket Power Output: DC 5V 1A / DC 5V 2.1A.Product Weight: 192g.Packing:PP BagPackage Content:.1 x Cigarette Lighter Socket.1 x Voltmeter.1 x Dual USB Charger.1 x Set of Connecting Accessories.1 x Set of Connecting Wires with built-in fuse