*Ultrasonic transducing technology. *Soften hard water filter *Water filter with silver ion ceramic ball for bacteria-killing. *Water tank injected with nano-silver powder for preventing microorganism. *Automatically power off when water tank is empty and a buzzer will alarm the user to refill the water. *Adjustable output of mist,85-260ML/Hr,superfine mist up to 1-3 microns. *LCD displays data of humidity,mist and time *Easy and quiet operation *Work very silently *Negative-ion generator *1-12Hr timer *Capacity: 5L