Sam-450-12 samlex sam-450-12 12 volt 450 watt modified sine wave inverter with usb charging port and cables with clamps 450 watts continuous power 900 watts surge power for 1 second usb power: 5 vdc 500ma includes cigarette lighter plug and cables with clamps soft start technology cool surface technology low interference technology power save mode 2 ac receptacles overload and short circuit protection over temperature protection earth fault protection low input voltage alarm: 10.8 +/-0.3 vdc low input voltage shutdown: 10.5 +/-0.3 vdc high input voltage shutdown 15.5 vdc input voltage: 10.0 to 16 vdc output voltage: 115 vac output voltage regulation +10% / -2% 60 hz input fuse: 70 a ( 2 x 35a ) no load current draw: <0.35 amps peak efficiency: 90% load control cooling fan conforms to ul std 458 ETL, dimensions: 6l x 6.1w x 2.2h weight: 1.3 lbs