1.automatic working 2.low noise, protable 3.self rechanging 4.pretect detector 5.virtual wall Diameter: 32cmHeight:8.5cmPower: 24WRecharging time: 3 hrsWork time : 70mins Dust bag Capacity: 0.35LNi-MH Battery: 14.4V/1500mAhNoise: 50DbFunction: Anti-falling system: have Auto-vacuum:have Number of sensor: 32Anti-collision system:have Anti-falling system:have MOPhave AUTO recharge system:have ...