Features:  - 1000W car power inverter, convert DC 12V to AC 110V / AC 220V, steady and precise output voltage.  - Featuring 2 universal AC outlet and 4 USB charging port, great for charging smartphone, tablet, laptop, game console, TV, car  refrigerator, car vacuum cleaner, lights and other electronic devices.  - This power inverter adopts high quality metal shell and it is built-in cooling fan, when the inverter starts, the fan will start automatically.   - Intelligent dual digital display, simultaneous display of input and output voltage, safer and more convenient to use.  - Built-in over voltage protection, under voltage protection, over temperature protection, short circuit protection, over current protection,  safe and reliable.     Specifications:  Product Name: Power Inverter.  Material: Metal.  Color: Blue.  Power: 1000W(Rated 500W).  Frequency: 50/60Hz.  Input Voltage: DC12V.  Output Voltage: AC110V / AC220V.  USB Interface Output: 5V 3.6A.  Output Waveform: Modified Sine Wave.  Size: 19.5*10.5*6.9cm/7.7x4.1x2.7in.     Package Included:  1xPower Inverter.  2xBattery Clip Cable.  1xLighter Plug Line.     Notes:  - Please check the battery voltage before use, the product is only suitable for DC12V, not applied for 24V.  - Please ensure that the rated power is higher than the appliance you want to apply.  - Please do not overload, if you want to run several devices at the same time, you should refer to the total wattage.  - Please do not connect the inverter with the grid power, and a reverse connection of positive and negative is also forbidden.  - Please note that the cooling fan emits a little noise when operating the unit.  - Switch off or remove the switch before leaving the car to conserve battery power.