450 Watt Modified Sine Wave Inverter - a low interference, high efficiency modified sine wave DC-AC inverter converts 12 VDC to 115 VAC at an output frequency of 60 Hz. Connect through any 12V lighter socket in your car, boat, truck or RV. Cigar lighter plug and battery clamps included. Includes 2 - three prong outlets and a USB Charging Port. ETL safety listed. USB charging port: 5 VDC, 2.1Amp. 12VDC Input / 115 VAC Output. 450 Watts / 900 Watts Surge. Load controlled cooling fan. Low battery input alarm. Universal protection circuit: thermal, battery, overload, short circuit, earth fault. Soft start, Cool surface, Low interference technology. Dimensions: 5 inch x 6 inch x 2 inch. 2 Year Warranty.