Husqvarna 220 AC 8.7-Inch 1/2 Acre Cordless Electric Robotic Automower Robotic mower for homeowners with areas up to 1/2 acre; automatically manages both mowing and charging When mower reaches boundary wire, it turns around and proceeds back across the lawn Guide wire helps the mower to find its way back to the charging station 3 razor-like blades cut grass cleanly; 8.7-inch cutting width; mows up to 807 square feet per hour Can mow continuously for up to 45 minutes; backed by 2-year warranty