The Champion Power Equipment 200961 inverter generator has a 4-stroke engine, making it more powerful and efficient than other generators on the market. The generator also has a 79cc motor that initially generates 1,850 running watts and 2,500 watts when using gasoline. Alternatively, the engine provides 1665 running watts and 2,500 starting watts if you use it with propane. It also has a 3-year limited warranty, so you can be sure that your investment is protected. This generator is also quiet, with a noise level of only 53dB. Finally, it has a long run time on both fuel types.