General description New high-quality materials, well-made, durable, and perfectly matched to the Cecotec Conga 2290 Ultra 05661 Robot Vacuum Cleaner. Clean accessories keep your home robot at peak performance and help reduce the infiltration of dust, pollen, and other allergens into the air you breathe. The contents of the accessories are easily removed and replaced as part of routine maintenance. Technical specifications Type: Sweeper Accessories Material: Plastic Package Contents: 4 x Sweeper Cleaning Brush Measurement allowed error: +/- 1-3 cm Usage To achieve the best cleaning and filtering effect, the cleaning accessories should be replaced every 2-3 months depending on the frequency of use. The HEPA filter can greatly improve air quality and reduce particle size by up to 99.97%, helping to remove household dust, pet dander, and more. The pre-filter can help reduce unpleasant odors from pets, smoke, cooking fumes, and various household products and chemicals.