The Black Diamond 3500-Watt Portable Generator with CO Shield delivers 4375 starting watts and 3500 running watts, providing up to 14 hours of run time on a full tank of gasoline with a noise level of 68 dBA from 23 feet. Built-in protection features include a low oil shut-off switch and a 0.5-quart oil capacity (recommended 5W-30), plus Volt Guard to help protect appliances and equipment from electrical voltage spikes. Power a range of needs with a 120V 30A locking outlet, a 120V 30A RV outlet, and a 120V 20A household duplex outlet, and monitor voltage, frequency, and operating hours easily. CO Shield adds an automatic carbon monoxide shutoff system for an added layer of safety during operation.