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.