【Easy-Maintenance HEPA Filtration】The single cup capacity is 210ml, featuring enhanced fine filtration with five cartridges. The cartridges can be reused after rinsing and drying; however, if a cartridge becomes soft or ineffective, it should be replaced.This efficient model is equipped with three built-in 1800mAh batteries, providing a maximum operating time of 20 minutes. Enjoy the freedom from cable constraints while easily cleaning every corner!【Efficient Cleaning Performance】Sunlzy presents a highly powerful vacuum cleaner with an impressive suction capability of up to 16Kpa and a stable power output of 200W, designed for the efficient removal of fine dust embedded deep within mattresses.【Comprehensive Ambient Humidity Monitoring】Our Patented product is equipped with an advanced environmental humidity monitoring function, enabling it to detect micro-environmental conditions with high precision. The optimal humidity range is between 45% and 65%. You can safeguard your home environment by utilizing the displayed humidity values for informed decision-making.【Efficient & Fast】Equipped with 5-in-1 rapid cleaning technology— physical ultrasound, high-frequency powerful tapping, hurricane-style deep airflow, and super suction power—this device delivers an optimal mattress cleaning experience, creating a thorough, healthy home environment.【Safe and Reliable】Featuring one-button long-press activation and 2-speed adjustment, this Sunlzy bed vacuum cleaner is crafted with high-grade components and durable materials—making it an ideal choice for households with pets and infants. Should you have any questions or suggestions regarding the product, please feel free to contact us