Plug & Play, This 5V to 12V DC converter is really handy when travelling or outdoors, just power it with a 5V 2A power bank and you can start running your 12V devices.Widely Usage, Super convenient for different kinds of devices such as Fan, Table Lamp, Wireless Audio, Wireless Router, Speakers that requires for 12V power.USB Input: 5V A male; DC Output: 12V; Max current: 0.8A; PLEASE NOTE: The size of the DC Connector is OD: 5.5 mm and ID: 2.5 mm(2.1mm). Please check if it fits in the power jack on your devices.Safe & Reliable, with built-in upgraded intelligent IC circuit, our voltage adapter provides your devices perfect protecetion from over-current, over voltage, overload or short circuit.Longer Transfer Distance: 1m/3.3ft power cord and no loss current, makes long distance transfer free. Specification:Input: 5V Output: 12VCurrent: 0.8~1A Package Includes:1 Piece DC-DC Converter 5V to 12V