Voltec 10-00477 400 Watt Power Inverter 400 Watt inverter with 2 - 15Amp outlets and 1 USB port Plugs into DC Charger or cigarette outlet For car, truck, boat, SUV or RV Designed for safety, durability and reliability Limited lifetime warranty ETL listed is proof of product compliance (electrical, gas and other safety standards) to North American safety standards Wave form: Modified sine wave Max continuous power = 400 watts Peak power = 800 watts High speed cooling fan