DUAL FUEL: Operate your 3800-watt portable generator right out of the box on either gasoline or propane, plus the unit holds 0.6-quarts of oil (included) and has a low oil shut-off sensor.Wheels : No. Engine Speed : 3600 ELECTRIC START: Power up the 224cc Champion engine with the handy toggle switch INTELLIGAUGE: Keep track of voltage, hertz and run-time hours to easily monitor power output and track maintenance intervals OUTLETS: One 120V 30A RV outlet (TT-30R), one 120V 30A locking outlet (L5-30R) and two 120V 20A household outlets (5-20R) - trust Volt Guard built-in surge protector to prevent overloads CHAMPION SUPPORT: Includes 3-year limited warranty with FREE lifetime technical support from dedicated experts Wheel Diameter:8 in.