Extremely quiet operation minimizes noise EPA III and CARB Compliant. 212cc 4-stroke OHV engine produces 3800 surge watts and 3400 rated watts with a half-load runtime of up to 8. 5 hours. shutoff maximizes the generators lifespan by using up the remaining in the carburetor before shutting down. Produces clean power to prevent damage to sensitive electronics such as smart phones tablets and laptops.