Switch between gasoline (11,000 surge watts, 8,300 running watt) and propane (9,500 surge, 7,500 running) with the simple turn of the selection dial Voltage easily goes from 120V to 240V, perfect for transfer switches and emergency backup Electric start powers the 457cc 4-stroke OHV engine with the turn of a key 6.6-gallon tank provides up to 8.5 hours of half load run time Includes four 120V GFCI outlets (5-20R), a 120V 30A twist lock outlet (L5-30R), a 120V/240V 50A outlet (NEMA 14-50R), a 12V DC cigarette-lighter-style plug, a bottle of oil, a 47-inch LPG connection hose, and a two-year warranty