... control 3 Preset time, Low Noise 4 Auto Recharging 5 CE, RoHS Eighteen Advantages Of AMTIDY Robot Vacuum Cleaner :1. Special Features: ... melon seeds, walnut shell can easily be sucked;14. Multi-model cleaning: Spiral, random, along the wall, focus on ... can be replaced, be closed to life. Robot Vacuum Cleaner Structure Introduction Factory View: Brand New Dry Vacuum Cleaner Intelligent Household