To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
The brush roller jammed and stopped rotating after a week of use. Had to put the old brush in and return this one. I guess it's better to buy an original one from Neato. My husband recorded a video showing both, check the difference.
These replacement accessories are way better than the original (what came packaged with the vacuum unit itself when I bought it). Would definitely recommend these accessories as they are well worth it. The seller was excellent as well.