What is this? The primary filter mainly applies to the first filtration of the robot vacuum cleaner, which can filter out dust with large particles. Widely used in different models of robot vacuum cleaners, such as N79S N79 DN620 DN622 500.
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 analyzes reviews to verify trustworthiness.