Vitto(tm) Diffuser Water Bottle USB for Essential Oil Humidifier Aromatic Cool Mist Night Light for Car, Bedroom,office, Home (Blue) Add moisture to wherever you go : Designed to be portabl. Add refreshing mist to yourl bedrooms, office and even in car Add a drop of essential oil us: Give your room a fresh mist of delightful scenting Safety :Run for about 4 hours with 170ml water and auto shut-off to protect the device when the water is gone LED mood light : Just click the on/off button, a soothing mist with light healing comes out. When you click that button once more, it turns off the light and only provides moisture. One more click the button will turn off the humidifier Easy to use : Just charge with the humidifier. The charger cable fits right easily in to any USB port