Clean & Empty Cordless Vacuum with Auto-Empty System | BU3521UK Laundry For recirculation configuration: 2 x

For recirculation configuration: 2 x 2 battery of directly integrated

Use the SmartThings app to create no-go zones and virtual walls if you want it to avoid certain areas or objects

Cooktop-based hood control - Yes

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Clean & Empty Cordless Vacuum with Auto-Empty System | BU3521UK Laundry For recirculation configuration: 2 xCordless Cleaning That Empties Itself Take one of the most annoying jobs out of cordless vacuuming with the Shark Clean & Empty Cordless Vacuum BU3521UK. Once you've finished cleaning, simply return the vacuum to its dock. Shark's Auto Empty System automatically removes the collected dirt and debris from the vacuum's dust cup, transferring it into the larger sealed base. The base can hold up to 30 days of dirt and debris, meaning you don't have to