DESC: Why spend every Saturday mowing your lawn? The Friendly Robotics RoboMower is a fully automatic lawnmower designed to mow your lawn entirely by itself. Just press the button, and the Robomower RL 850 begins circling your yard, cutting and mulching the grass. The RoboMower can handle any lawn a traditional lawnmower can, regardless of shape, slope and obstacles.Full-featured model for lawns up to 10,800 square feet where 21" walk mowers are typically used 3-blade cutting system A perimeter wire that you set up ensures that the RL 850 does not stray from its task Mulches the grass as it mows Travels on the lawn in a systematic criss-cross pattern, covering the lawn several times from side to side to ensure that the entire yard is covered and the grass is cut from several angles Safe, quiet, and environmentally friendly Provides the highest quality of mowing Mulching system creates a more healthy lawn Built of solid construction Comes with everything needed to set upSafety Features: Senso