OPTICAL NAVIGATION TECHNOLOGY: Take the guess work out of yard work. Our robot mower uses sensors and a wide angle, high dynamic range camera to identify grass even under extreme contrast lighting situations to allow the robot to navigate around your lawn efficiently. DESIGNED FOR SMALL LAWNS: Mow for up to 3 hours covering 1000 square feet while dropping small clippings on the lawn to feed the grass. For a larger yard, extra batteries can be purchased separately. OBSTACLE AVOIDANCE: Two ultrasonic sensors detect obstacles and automatically re-direct the robot mower to avoid obstacles as small as 6-inches NO GO FUNCTION: Use the included 33-feet of magnetic wires to create a virtual fence within your yard. Set up is easy with no power source or digging required and prevents the robot mower from entering any forbidden areas. CLIMB UP TO 35%(19°) SLOPE: Deep tread wheels and powerful drive system grips slopes to handle complex lawns DROP AND MOW: There is no need for an outdoor power socket or app setup. Simply set the robot mower on an appropriately sized lawn, push the start button, and let it get to work. FOR BEST RESULTS: A clearly defined edge around the full perimeter of your lawn is required to prevent the mower from leaving the grass. Adjustment of the lawn edges may be required. As with other robot mowers, a grass trimmer is needed to trim the lawn edges. INCLUDE: Robot mower, 1 x MX 24V MAX* battery, 24V quick battery charger, 33 ft magnetic strip, and 12pcs magnetic strip pegs, extra 3pcs blades Attention: If you need to purchase the battery pack separately, please search on Amazon: B0CTQPN6Y7