NINISEI Aromatherapy Essential Oil Diffuser/Humidifier , Atomization 4-8Hours, Can Be Used In The Living Room, Bedroom, Baby-room Etc ,Can Choose light Color,Waterless Auto Shut-off. Soundless: provide a leisure and quiet environment for you to enjoy the life by getting out of the busy. Delicate mist: the mist can reach the basic layer for deep- moisture. Watery skin can be observed. aroma useful to sleep: utilize the high frequency ultrasound physical vibration to make the active ingredients of volatile oil emitted 100%. You can feel the fantastic aroma performance in 2 minutes. Drive dryness away in winter: keep moisturizing and absorb water make double function shoulder together. More water and moisture in summer: to clear up the heat by decreasing the temperature is an attractive choice in summer.