General description Vacuum Cleaner Accessories for Conga 3290, 3490, and 3690 Robot Sweepers are made from high-quality materials, ensuring durability and a perfect fit for your equipment. These clean accessories help maintain your home robot at peak performance, effectively preventing dust, pollen, and other allergens from entering the air you breathe. Technical specifications Material: Plastic Package Contents: 2 x Main Brush, 1 x Cleaning Brush Measurement allowed error: +/- 1-3 cm Usage To achieve the best cleaning and filtering effect, replace the cleaning accessories every 2-3 months depending on usage frequency. The HEPA filter improves air quality and reduces particle size by up to 99.97%, helping to remove household dust and pet dander. Pre-filters help reduce unpleasant odors from pets, smoke, cooking fumes, and various household products and chemicals.