Uses either propane or gas fuel power. 4000 Surge watts and 3500 Running watts. 7 HP 4-Stroke OHV engine with recoil start. Features (1) 12V DC outlet (1) 120V RV outlet and (4) 120V AC outlets. Engine runtime (gas): 10 hours @ 50% load. Engine runtime (gas): 10 hours @ 50% load. Engine runtime (LP): 12 hours @ 50% load. 3.5 Gallon fuel tank. 20oz Oil capacity. AC output: 120V 3500W 60Hz. DC output: 12V 8A. EPA Approved. Watts may be reduced by 10% when using propane. Propane tank NOT included. Includes: DC Connector wires. Spark plug wrench. Regulator h