Replacement Spare parts ，Compatible for N9+ ，Accessories Water Filtration: The vacuum cleaner’s dustbin uses water filtration technology to provide a cleaner indoor environment. Vacuum Cleaner Water Tank: Reduces the suspension and buildup of dust and dirt, keeping the room clean. Floor Care: The debris bin is equipped with a wet mopping function, which better protects floors from scratches and damage caused by dry conditions or friction. At the same time, the cleaning power of water makes floors shinier and more durable. Easy to Clean: Although it requires cleaning, cleaning the water tank is a relatively simple step compared to replacing a filter.