Meet the Worx WR147 Landroid M Mower: a robotic mower with app support that can cut up to 1/4 acre of grass. It is pretty easy to set up: simply install the boundary wire, measure your lawn with the app, and you are ready to go. You can check the mowing progress and control the robot from your smartphone.
This robot can overcome slopes up to 20 degrees. It has a rain sensor to detect wetness and return to the charging station automatically. With Find my Landroid GPS, you will be able to recover your lost mower fast.