This is the Daredevil DDM-55 Mower: a robotic remote controlled lawn mower powered by a 9.5HP engine. This hybrid gas, electric mower can also work as a snow plow, sweeper, and water dispenser with additional attachments. The Daredevil Mower has a 4 liters fuel tank.
This robotic mower uses a two-piece manganese blade. You can operate it form up to 200 meters away.