VIOMI "Alpha (S9)" + Auto dumping station, EU, Black, Robot Vacuum with Auto-Dumping Cleaning, Suction 2700pa, Sweep, Mop, Remote Control, Wi-Fi, Multi-Floor Mapping, Self Charging, Auto Dirt Disposal, Dust Box Capacity: 3L, Working Time: 180m, Maximum area about 240 m2, Barrier height 2cm