This is the WCS7000 commercial 6500 watt generator that is designed with a gas-powered GX390 engine that features a high capacity fuel tank (26 L), (4) 120V 20A, (1) 120V 30A (1), 120/240V 30A. This unit is an electric start for quick and easy operation. Run time is 7.2 - 12.4. hours with a decibel rating at 23 feet :70.5.