Champion 3800-Watt Dual Fuel RV Ready Portable Generator with Electric Start Dual Fuel - Runs on GAS or PROPANE straight out of the box. Engine type: 4-stroke, wheel diameter: 8.0inches 4750 starting watts, 3800 running watts with up to 9 hours run time on a full tank of gas and up to 10.5 hours on a 20 lb. propane tank Powered by a reliable 224cc Champion engine with Touch Start, push-button electric start (battery included).Gasoline Starting Amps at 120V - 39.6A.Gasoline Running Amps at 120V - 31.7A.Propane Starting Amps at 120V - 35.6A.Propane Running Amps at 120V - 28.5A Frequency: 60 Hz. Outlets - 120V 30A RV, 120V 30A locking, two 120V 20A household outlets all secured by Volt Guard, protects your appliances from power surges Champion Support - 3 year limited warranty with FREE lifetime technical support. Refer instruction manual before use. Please refer user manual for trouble shooting steps