Description: 4 in 1, dual USB port charger , led voltmeter ,Cigarette Socket and switch Waterproof cigarette lighter and dual USB connection and integration, separate USB waterproof cover Can be used to charge GPS, cell phone, MP3 or interphone. Can be used on motorcycles, ATVs, Quad bike snowmobiles, car and boat Input Voltage: DC12V-24V Specification: Input Voltage: DC12V-24V Output Voltage: DC5V Output Current: 2.1A and 1A Total 3.1A current output. Upper port is 2.1A, under port is 1A Voltmeter Range: 6V-30V Dual USB Led Color: Blue Voltmeter and Switch LED Color: Red With High-Tech IC, decrease charging current when the battery is nearly full With reverse polarity protection With overload protection Package Includes: 1 Piece USB Charger Socket Panel 4 Pieces Screws