Yamaha EF3000iS, 2800 running Watts/3000 Starting Watts, Gas Powered Portable Inverter Sound absorbing material, used in key locations, does not resonate sound Helps reduce carburetor cleaning and repairs by eliminating stale gas in the carb Greater fuel efficiency and noise reduction by automatically adjusting engine speed to match the load Continuous operation for up to 19 hours without refueling Recharge 12 volt batteries for RV, auto, or marine, etcetera