https://webyourself.eu/blogs/2089546/Understanding-Bobsweep-Customer-Rating-Before-Choosing-a-Robot-Vacuum
Built from real stainless steel, UltraVision’s dock stands at the top of the industry. While other docks require constant maintenance, UltraVision combines a massive 6L dust collector, powerful 1200W auto-emptying, and odor-filtering bags for high-performance results with minimal upkeep.