Features: 1.OBS Terrain Detection System make it have Intelligent Drop Avoidance Induction. 2.65DB low noise mute gives you a quiet environment. 3.1800PA Super Strong Suction£ºIt easily absorbs dust, hair, paper, and reduce pollution. 4.10mm Climbing:Its has 10mm climbing function, 15 degrees climbing height. 5.65mm Slim Design. Weight:600g Large Cleaning Area. Battery: 3.7V 1200MAH Working time: about 100 minutes Charging time: about 150 minutes Cleaning area: 150m2