OVER 20 HOURS OF CONTINUOUS HEALTH BENEFITS: Large-capacity. 5L water tank permits over 20 hours of continuous humidifying, relieving sinus problems, moisturizing dry skin, easing asthma symptoms, reducing snoring, and lowering chances of spreading cold and flu360° DEGREE HUMIDITY COVERAGE: 360° degree rotating nozzle ensures an even level of humidity distributed in your home.It's the perfect size for any room, big or small.Convenient usage in your office, home , bedroom, living room, and anywhere else you might need itACTIVATED CARBON COTTON CARTRIDGE: microporous activated carbon cotton filter cartridge filters out microorganisms and negative ions from water for a cleaner and healthier mistULTRASONIC, ULTRA QUIET TECHNOLOGY: Ultrasonic Technology runs silently, providing cool humidifying mist without excess noise100% WORRY-FREE PURCHASE: If you are unhappy with your purchase, reach out to us via the Contact Seller button in the Your Orders section for a refund/replacement within 24 hours