Office Bedroom Desktop Air Purifier, H13 True HEPA 3-Layer Filter Compact Air Filter with Smart Temperature and Humidity Display, Sleep Mode, Filter Replacement Reminder 3-layer filtration system - Enjoy clean air, pre-filter, HEPA H13 filter and activated carbon filter capture at least 99.97% of airborne particles as small as 0.3 microns, such as dust, smoke, pollen, odors, pet dander, hair. Improve the air quality in your home, especially for children, pet owners and people suffering from anaphylaxis. Temperature and Humidity Display: Versatile design allows you to freely change the temperature and humidity through the digital display, no need to manually press buttons to know the change of air humidity. Easy on/off air filter, adjustable fan speed (1-2 levels). Ultra-quiet sleep mode: Turn on the purifier's sleep mode, the fan will drop to the lowest speed while filtering the air. (Noise level 26dB) Perfect for quiet and comfortable interiors, you won't even notice it's on your desk, it works quietly and efficiently when you go to sleep. Lightweight and powered by USB-C: Small and compact air purifier, ideal for stationary use. It does not take up much space and can be used almost anywhere. Weight: 2.1 lbs, Height: 7.8 inches, fits perfectly in bedroom, desk, nursery and office. Smart Filter Replacement Reminder: The filter replacement indicator light turns on, it means it needs to be checked, it turns off automatically when you replace the new filter. It is recommended to replace the filter every 3-6 months for the best purification, depending on the air quality in your area. Search "B08R6527XJ" to replace the filter. The items on our listings come from overstock or consumer returns.