On Walmart.com where you can now get this 鲨鱼牌机器人智能吸尘器
Shark IQ R100 Robot Vacuum for only $199 shipped (regularly $394) as part of their Black Friday sale!

This robot vacuum features deep-cleaning power that can pick-up debris and pet hair from carpets and floors. It has angled side brushes that can dig deep into edges and corners to clean dust, dirt, and stubborn dirt. The brush roll is self-cleaning to remove hair from the brush roll – so that you have no more hair wrap! Plus, you can easily control it with the Shark Clean app to clean immediately or schedule a whole-home cleaning!