Our Greenworks 20 in. The chainsaw features a high-efficiency 80V brushless motor with electric start that provides more power, torque and longer life without the hassle of gas. Equipped with 20 in. Bar and chain for reliable performance. Automatic oiler easily applies oil to the chain keeping it lubricated. Mechanical chain brake stops chain movement to prevent backbackThis chainsaw is compatible with the Greenworks 80V system of 75+ tools and batteries and is backed by a 4-year warranty. No gas smell. Zero pull laces. Maintenance-free. No pollution breathed. Zero waste of time."