1600T Smart Lawn Mower 3000rpm Autocharge Obstacle Avoidance Grass Mower Robot 110‑240V Item Type: Smart Lawn Mower Gross Weight: 20400g/719.6oz Material: ABS alloy Lawn Mower Size: 60x46.5x26.5cm/23.6x18.3x10.4in Green Nail Length: 8.5CM/3.3in Rated Power: 85W Noise: ≤60db Number of Cutting Blades: 4PCS Cutting Height: 2.5 to 5.5cm/1.0 to 2.2in Cutting Width: 28cm/11.0in Cutting Speed: 35m/min Blade Speed: 3000rpm Gradeability: 30 degree maximum slope Maximum Working Ambient Temperature: 40℃ Coverage (One Charge): 800m² and 20 percents Working Capacity: 2600m² and 20percents Battery Model: 1PC Rechargeable lithium battery, battery capacity: 6600mAh (shipped with built in battery) Charging Time: ≤3 hours Average Working Time: 2 to 3 hours Scope of Application: Home garden lawn, green lawn, garden lawn, etc.