The Yard Force Revola X4E is a fully autonomous robotic lawn mower engineered to handle yards up to 1/2 acre (21,780 sq ft) with zero effort from you. Powered by a long-lasting lithium-ion battery and guided by boundary wire technology, the X4E quietly cuts your lawn on a customizable schedule — rain or shine — so you can spend your weekends doing what you love. Designed for homeowners who want a perfectly maintained lawn without the time, noise, or fuel costs of traditional mowers, the Revola X4E navigates complex lawn shapes, handles inclines up to 35%, and automatically returns to its charging dock when the job is done or the battery runs low. With its whisper-quiet motor and zero emissions, it's the smart, eco-friendly lawn care solution built for modern living. Compatible with the Yard Force Connect app , you can schedule mowing sessions, set cutting zones, monitor mowing history, and control the mower remotely — all from your smartphone. Whether you're at home or away, your lawn stays pristine.