This Greenworks 18 in chainsaw features a highefficiency 80 V brushless motor with electric start which provides more power, torque and longer life without the hassle of gas Equipped with 18 in bar and chain for dependable performance Automatic oiler easily applies oil to the chain keeping it lubricated Mechanical chain brake halts the chain movement to prevent accidental kick back This chainsaw is compatible with the Greenworks 80 V system of 50 tools and batteries and is backed by a 4 years warranty