Long life OHV engine with low oil shutdown protection and covered, circuit breaker, protected outlets. Oversized Steel fuel tank with built-in fuel gauge for up to 13.5 hours of run time. All steel construction, heavy duty bolt on never-flat wheel kit. 4 in 1 digital display for voltage, frequency, running hours and total hours on unit.. Specs: rated watts running 3600, rated watts starting 4500, manual starting system, low oil level shutdown, receptacles: (4) 20 amp 120v, (1) 30 amp 120v. Start/ stop, choke and fuel shutoff controls mounted on easy to use control panel with LED light, weighs 123.20 lbs., dimensions 21.7in H x 28.5in L x 18.9in W, OHV engine, 212cc engine that is engineered for over 1000 hours of use, 3600 rpm, voltage is 120v, frequency is 60 Hz, 4.5 gal durable gas tank and 13.5 hour run time at 50 percent load. 3 year limited warranty applies when registered within 30 days. 2 year standard limited warranty.