With the Stihl RMI 422 P Robotic Mower, enjoy your lawn without doing any of the work! This smart mower will quietly and efficiently mow your lawn for you. It automatically mows on a regular basis and can handle thick, rough grass and slopes up to 22°. The RMI 422 P is designed to cut yards up to ¼ acre in about 17 hours per week with its durable double-sided steel blade, adjustable cutting heights and high performance STIHL battery technology. This robotic lawn mower has automated and customizable features such as intelligent hood sensor (allowing the iMOW to work around solid objects), flexible programming, automatic charging and more!