ZNU 00W Car Truck Boat DC 12V to AC 220V Integrated Power Inverter/Converter with Car Charger Adapter Converter USB Port Can convert DC12V into AC 220V output Can be directly used to charge for MP3 and mobile phone,Can protect the electric circuit,Can work under the circumstance of ultrasonic sound Audio alarm wrans of low battery level prior to anto shut down,Safely shuts down in over temperature or overload condition "Operate a 13"" TV for about hours from a typical car battery,Simply plug into 12-volt outlet for instant AC power " Output voltage:220V AC,Output frequebcy:50hz+/-2hz,Output wave form:modified sine wave. Input voltage range:10.0-15.0VDC