Briggs & Stratton P4500, 4500w Inverter Generator, 3 Year Warranty. Designed with camping and recreation in mind, this inverter generator is quiet, lightweight and efficient to easily enjoy the little conveniences of home anywhere you are. Features: Quiet Power Technology: Automatically adjusts the engine speed further reducing noise, fuel consumption and emissions. Safe for Sensitive Electronics: With inverter technology, it produces smoother power for sensitive electronics such as laptops, phones and gaming systems. CO Guard® Carbon Monoxide Shutdown: Advanced Detection. Added Protection. This patent-pending technology shuts down your generator when harmful levels of carbon monoxide accumulate in the generator’s operating area.