Convert battery power to household electricity. Automatically shuts down if voltage is too high or low. Operates most power tools and household appliances. This is a great device to have around in the event of a power outage, and you need power in an emergency situation. Continuous output power - 400w Rated input voltage - 10v - 15v Output voltage range - 105v - 115v Maximum efficiency: >85%* 400w Car power inverter - converts 12V DC batter power to 120V AC household electrical power* Compact and portable - measures 6 x 4-1/2 inches - easily storable in the car* 2 AC outlets + heavy duty clamp that connects directly to vehicle battery + 12V lighter plug* Take it along on your next camping trip - it can power your radio and charge your cell phones* Use your car's battery to your advantage - ideal for emergencies!