MOWRO 4.0 Ah Lithium Ion Easy, Safe, Fully Autonomous Robotic Lawn Mower with Install Kit, by Redback RM24 (9.5in.) Item Weight:40.12 Bulk Pack: 100 count box keeps 1220149426 Bulk Pack: 100 count box keeps projects moving and reduces restocking trips The crisp geometry of these starter strips sets the tone for a polished Climbs slopes up to 30° grade An included rain sensor automatically sends the robot back to the charging station if rain is detected and will continue to mow once the storm is over An auto stop safety bumper allows this mower to safely go around objects left in the lawn and find an unhindered route to continue mowing if obstacles get in its path