R850 Robot Vacuum VS. Black Decker HRV425BL

Stands at 4.29 inches above ground, can clean below sofas, beds and furniture that is raised above its height.

90 minutes battery life suitable for small and medium sized homes

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Features a pet hair beater bar tool – it removes all the dog and pet hair from multiple floor surfaces. Dust bin also big enough to accommodate 2 times more pet hairs.

Built with up to 4 side sweepers – deeply reach the corners and along walls removing every unwanted residue from them.

90 full minutes provided by the lithium ion battery after a full charge.

Takes 240 minutes for a full charge

Features a multi surface purpose beater bar and an additional wide brush bar - can clean multiple floors on a single floor on a single pass. Most effective on ceramic, tile, laminate, low and medium pile carpets.

Features an auto sense technology – automatically adjusts the suction power from the hard floors to carpets for deep cleaning.

Can clean large rooms for 90 minutes before running low on battery.

Self docks and recharges when battery is running low or after completing a cleaning session.

Randomly moves from room to room on a single floor. Uses the troubleshooting alerts to remove guesswork by showing you the cause of the problem like if anything is stuck while cleaning.

Features automatic sensors – detect stairs or objects on its cleaning path and changes direction or cleans around and below furniture.

Built with Autosense function – automatically increases the suction power as it switched from hard floors to carpets.

Equipped with a high efficiency filtration system –gets rid of pet dander, tiny dust and other particles that can trigger allergies and asthma in a home.

Can only sweep hard floors and carpets

Features the spot cleaning mode – identifies areas with high concentration of unwanted residues and thoroughly cleans them.

Convenient operation through black Decker Smartphone app. Lets you schedule and monitor cleans with just a single click from wherever you are.

Built with the black Decker Smartphone app – download it on your Apple or Android phone and enjoy remote control from anywhere.

Black Decker Smartphone app connects to home or office wifi

Schedule cleans up to 7 days a week. It automatically cleans according to preset schedule.

Collects large debris with its large debris bin capacity of 1000 ml

Low profile design of 4.29 inches – able to clean below most furniture and enters places you never imagined it would.

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1000 ml dust bin capacity – very large debris capacity that can clean an entire medium to large sized room or home without being emptied.

13.9 x 10 x 4.3 inches

9 pounds

• Carries up to twice more debris • Three cleaning modes – auto, spot and quick modes • Up to 90 minutes of run time • Mobile control through black Decker Smartphone app • Cleanings can be set in advance • Multi surface purpose brush bar • Cleans corners and edges using side brushes • Built with 2 hepa filters • Docks and charges automatically • Hands free operation • Allows personalized illuminated LED • Cleans under furniture

• Cant clean specific areas • Not built with path finding feature • No voice commands using Amazon Alexa • No wet mopping feature – only sweeps • No full bin indicator