Automatic emptying is a pretty crucial feature for allergy sufferers who don't want to manually empty a dust bin into the trash on a regular basis.

Source: https://mashable.com/article/early-cyber-monday-self-emptying-robot-vacuum-deals-2023

It's the first stick vacuum that is able to charge, store all your tools, and even automatically empty its own dust bin, all from one very sleek docking station.

Source: https://www.digitaltrends.com/home/best-robot-vacuums/

The filter is easy to remove but WD5 has a brilliant button on the top that you can press when the vacuum is on that clears the filter by pushing air in the opposite direction back into the dust bin.

Source: https://www.irishexaminer.com/business/technology/arid-41045660.html