Features: USB input 5V4A, 5.5x2.1mm output 12V1.25A Inner positivepole, outer negativepole, input 5V3A, output 12V1A Suitable for various 12V low-power devices such as routers, optical cats, speaker, cameras, etc This 5V to 12V DC converter is really handy when travelling or outdoors Our voltage adapter provides your devices perfect protecetion from over-current, over-voltage, overload or short circuit. Specifications: Size：approx 115cm/45.27in Item:USB 5V 3A to DC 12V 1.25A Adapter Cable Jack：5.5x2.1mm Package Includes: 1PC USB to DC Cable note: Due to the different monitorand light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation- due to manual measurement.