This Yamaha EF4500iSE Gas-Powered Portable Inverter Generator is uniquely designed for maximum fuel efficiency and minimum noise. It has a helpful, portable construction, so you can easily take it with you on the go. The electric start inverter generator generates up to 4,500 watts of power on 357 cc, so you get the energy that you need. The OHV is CARB compliant and is designed with an electric start, so you can get it going quickly and smoothly. The 4-stroke inverter generator has an automatic choke, so you can be confident it will run in cold temperatures as well. The Yamaha EF4500iSE Gas-Powered Portable Inverter Generator has an easy-to-read power meter for your convenience. This device can run for up to 15.2 hours at a time.