Since 1964 Buffalo Tools has been a leader in the hardware products industry. This Sportsman 4000W propane unit is ideal for a variety of power supply applications such as camping, tailgating and for RVs or for backup power in case of power outages. It has a lot of features although its surprisingly affordable. It's the perfect size in case you need some temporary power in an emergency situation. It has a 6.5 HP 4-stroke OHV engine a recoil start. Its affordable but well thought out with full featured options such as automatic low oil shutdown and circuit protection. Its equipped with two 120V AC Outlet for 120V power and one-12V DC outlet for charging a battery. Since it runs on propane you never have to worry about the fuel going bad or having the carburetor getting fouled due to degenerated gasoline - a common problem with gasoline powered small engines. It boasts an engine run time of 10 hours at 50% on a common 20Lb (gas grill type) cylinder (LPG cylinder not included). The readily available propane (LPG) fuel is very easy to find, safe to storage and burns clean. Included are 12V cables, hardware, & propane fuel hose with a regulator for your added convenience. Its surprisingly quiet with less than a 68 db engine noise level. Its a great addition for anyone who needs affordable power.