Compatibility: The silver ion module is compatible with Dreame X40 Ultra Complete/L20 Ultra Complete/L10s Pro Ultra Heat/X10/S10/W10S/S20/X20 series vacuum cleaners. Please verify your model before purchasing. Powerful Antibacterial: The slow-release silver ion module continuously releases silver ions into the water, achieving an antibacterial rate of up to 99.9%. As cleaning progresses, the silver ions are continuously transferred to the floor and wastewater tank, making whole-house cleaning, water storage, mopping, and wastewater recycling easier. High-Efficiency Filtration: The module's built-in beads filter and purify water to effectively reduce bacteria, ensuring peace of mind. The silver ion module is designed for slow-release silver ions in the water tank. This dual-function feature ensures cleaner floors and allows for worry-free barefoot play. Silver ions reach the floor through the waterway for effective cleaning. Package Contents: 1 white silver ion module, 1 blue silver ion module. Note: 1. Due to different monitors and lighting effects, actual colors may vary slightly from the image.2. Due to manual measurement, please allow 1-3 cm deviation. Please refer to the actual product received for accuracy.