Shell material Aluminum alloyColor GoldInput voltageDC 12VOutput voltage AC 220VOutput frequency 50 + / - 2HzUnload current Less than 0.3AConversion efficiency 80 percentContinuous output power 300W/600W/1000WPeak power 500W/1000W/2000WSpecifications brand new and high quality.Invert DC 12V to AC 220V ( Maximum 230V ) .Reliable power a variety of household AC products, such as portable stereos, laptop computers, camcorders and mobile phones etc. Protect the electrical and automotive circuits in use .Intelligent cooling fan system, CPU microprocessor to realize multiple protection .It will automatically shut down in the event of short-circuits, low .battery power, DC input voltage overload, DC output voltage overload and excessive temperature .LED display shows DC and AC voltage . Adopting aluminum alloy case, antioxidant, sturdy and durable .Package Included1*inverter2*clips1*cigarette lighter1*User ManualNotes1.If the cooler (fan) not work, it is normal, the temperture reach a certain temperture, or too hot, then the cooler will work.2.Please Ensure the Rated Power is higher than the electric appliance you wanna apply to. 3.And if you wanna run several appliance at the same time, you should refer to the total Watt. 4.If you wanna run a inductive load for a long time, it`s suggested to buy a pure sine wave inverter.