Check the listing for details. NorthStar Quiet Armor Commercial-Grade Portable Generator, Honda GX690 V-Twin. Condition: New. Listed at 3799.99 USD. The NorthStar Quiet Armor Commercial-Grade Portable Generator with electric start is the ultimate, high-powered, high-performance power solution for demanding jobsites. Powered by a Honda GX690 OHV engine, this ruggedly constructed generator is built for extreme durability and safety. A heavy-duty steel exoskeleton and premium components provide the reliability tough jobs require. Quiet Armor Technology delivers up to 20% less noise as measured (in dBA) against leading, commercial-grade portable generators*. It comes with a built-in battery charger/maintainer for easy charging of onboard electric start battery. Carbon monoxide detection and automatic shutdown ensure safe operation. A cutting-edge, multi-function LCD display allows for monitoring all.