The Champion Power Equipment 201122 2500-Watt Portable Inverter Generator with CO Shield is ideal for camping or tailgating. Weighing in at an ultralight 39 pounds, this model is one of the lightest 2500-watt inverters in the industry. Included are a covered 120V 20A household duplex outlet (5-20R) plus two handy 2.1A USB ports you can use to power your phone, laptop, or similar device. Just add oil (included 10W-30), and operate your Dual-Fuel generator right out of the box on gasoline or propane, and easily switch fuels with the fuel selector dial. When the 1.1-gallon tank of gasoline is full, the 79cc Champion engine produces 2500 starting watts and 1850 running watts and will run for up to 11.5 hours at 25% load. When using a 20-pound propane tank, it produces 2500 starting watts and 1665 running watts and will run for up to 34 hours at 25% load. CO Shield technology monitors the accumulation of carbon monoxide (CO), a poisonous gas produced by engine exhaust when the generator is running. If CO Shield detects unsafe elevated levels of CO gas, it automatically shuts off the engine. CO Shield is not a substitute for an indoor carbon monoxide alarm or for safe operation. DO NOT allow engine exhaust fumes to enter a confined area through windows, doors, vents or other openings. Generators must ALWAYS be used outdoors, far away from occupied buildings with engine exhaust pointed away from people and buildings. Meets the requirements of ANSI/PGMA G300-2018.