Product Description from the Manufacturer

Yamaha has created the quietest, smallest, and lightest generator of its kind. The YG2800i is a 2800 watt generator which uses inverter technology with a sixteen-pole rotor with twenty-four coil stator and Pulse Width Modulation inverter. The YG2800i is ideal for equipment that requires stable frequency and voltage. Voltage output stability is so "clean" that it can power microcomputers or sophisticated electronics, a feature that most generators cannot duplicate. "Economy Control" automatically adjusts engine speed to precisely match power demand. When the demand for power is low, the generator runs at a low engine speed, as power demand increases, the engine speed increases accordingly. The inverter system is the next generation of generator technology.

Source from Amazon.