#ad Today only, 7-07-19, the Roborock Robot Vacuum is $398.99 (regular price $569.99) and ships FREE at Amazon.com. Best-in-class technology of smart navigation maps your house, plans route and schedules. It can cross over things lower than 2cm, clean without omission and self-recharge, but avoid falling down the stairs, hitting and scratching your furniture, or being stuck by obstacles. Comes in black or white.