The FIRMAN W03661OF features a 208cc engine for reliable, long-lasting power, as well as a cast-iron sleeve to increase engine life. It has an impressive 3650 running watts and 4500 starting watts, and can run for up to 22 hours at 25% load due to its 6-gallon tank. The Eco Mode feature further conserves fuel usage for maximum efficiency. Additionally, it is easy to start with its recoil start system and features a low oil shut off for safety. All this power comes in a lightweight package, weighing only 106lbs, with noise levels of 67dB at ¼ load.