Description Our 11,000-watt inverterâs advanced technology with electric start features CO Shield carbon monoxide auto shutoff system. Equipped with Dual Fuel, the 459cc Champion engine with electric start and included battery provides up to 15 hours of run time on gasoline or 8 hours on propane.PRODUCT DETAILS:Dual Fuel: Operate your 11,000-watt portable generator right out of the box on either gasoline or propane, plus features CO Shield carbon monoxide auto shutoff systemUltra-Powerful: At 11,000 starting watts and 9,000 running watts on gasoline, and 11,000 starting watts and 8,100 running watts on propane, enjoy up to 15 hours of run time on a full tank of gasoline with a noise level of 64 dBA from 23 feetElectric Start: Trust the reliable 459cc Champion engine with its battery-included electric start feature and built-in Cold Start Technology for easy starts in cold weatherClean Power for Sensitive Electronics: Two 120V 20A GFCI household duplex outlets, a 120/240V 30A locking outlet, a 120/240V 37.5A outlet, and a 12V automotive-style outlet