Friendly Robotics RoboMower 21-Inch 5.5 HP Auto Mower #RL850

The Friendly Robotics RoboMower Automatic Lawn Mower is a fully automatic lawnmower designed to mow your lawn entirely by itself. The fully-automatic mower travels across the lawn in a crisscross pattern, covering up to 10,800 square feet on a single charge while you relax on the porch. The RoboMower works by mowing within a selected boundary outlined by a small wire (the unit includes 500-foot perimeter wire). Its navigation system can handle any lawn, regardless of shape, slope, or obstacles. It is capable of mowing 3/4 of an acre on one battery charge. Because the mower is rechargeable, it doesn't need gas or oil, and emits no pollution and little noise. However, it's still as powerful as conventional mowers, employing a battery-powered 3-blade, 21-inch powerful cutting system equivalent to a 5-1/2 HP gas mower, but with better mulching and a 5,800 rpm blade speed (double that of a typical gas unit). The Triple Chamber Mulching system compacts grass into small clippings that decompose naturally on the lawn, improving your lawn's health while lightening your workload. The mower also comes with a host of safety features, such as a child lock and a detection system that automatically turns off the blade if the mower is lifted. It also includes a user-controlled theft protection and disabling system using a personal password. The mower comes with plenty of oomph, completing about three hours of mowing with a single 24-hour charge. The RL850 is also upgradeable to the RL1000, which comes with a programmable docking station. The RL1000 will automatically depart and return to the docking station at preset times to mow the lawn--even at night while you're sleeping--adding yet another level of convenient operation. A 2-year warranty is included and comes complete with 2007 generation software.