Quiet Sleep Mode & Timer Settings: Enjoy a peaceful night's sleep with quiet sleep mode (≤32dB) and choose from four fan speeds. Set the timer for 2, 4, or 8 hours and conveniently monitor filter life. Upgraded 4-Stage Filtration System: Capture 99.97% of fine particles (0.3 microns) with a 360-degree ultra-fine nylon pre-filter, true HEPA filter, active carbon filter, and de-germinating filter. Certified H13 HEPA Filter: Eliminate dust, mold, pollen, pet dander, smoke, and odors. Experience reduced allergen effects consistently. 360° Efficient Purification: Refreshes air up to 240 ft² with a CARD rating of 239.9 m3/h. Perfect for homes, bedrooms, living rooms, kitchens, and offices.