The EF4500ISE is very quiet 58-60 decibels. 4500 watt maximum output, 4000 watt rated continuous output ' suitable for running an RV 15,000 BTU air conditioner and 1000 watt microwave oven, or two other major RV appliances simultaneously. Low speed running ' using the most powerful engine in its class to run at a constant ultra low speed of 2600 rpm to reduce gasoline consumption, extend running time between refueling and reduce noise and engine wear. Up to 7.4 hours running time at full rated load between refueling. Run time 1/4 load 15.2hr. It's Lithium Ion battery provides a solid a high charge density. Complies with California Air Resources Board Tier III exhaust emission standard. Qualifies for the highest engine life rating (extended). Exceeds 1000 hours emission compliance. Pulse width modulation inverter system ' sine wave as clean as or cleaner than household electricity. Suitable for computers, televisions, satellite TV systems and other sensitive electronic equipment and appliances. Electric Start ' effortless turn the key to start. Automatic choke ' easy starting even in cold climates. Low oil warning system ' shuts the engine off to protect the engine if the oil level drops. Power meter ' easy to read meter indicates the amount of power being used and the amount that's available. Hour meter ' displays the amount of running time accumulated to indicate servicing or refueling interval. Twin bar ' aids in lifting and loading. Also utilize for transport and anti-theft security. Gas gauge ' indicates amount of gasoline to indicate refueling interval. Stylish design that is attractive and practical. Four wheels with parking brake for easy transport and security. Gasoline capacity 4.5 gallons. Weight 194 pounds. Overall length: 30.7"; overall width: 24.3"; overall height: 27.2". Battery included. CARB engine life rating 1000+ hours.

 PROP 65 WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For more information, visit www.P65Warnings.ca.gov