Applying waterless spray nanotechnology to make the mist more pure, as well as built-in 2000mAh lithium battery to support longer working time, you can enjoy the fragrance at any time and place. There are multiple modes to fit your different emotions.You can set the scent concentrations from light and strong. In addition, 9 ambient lights can be used to get the same ambience at different festivals. Simple to operate the machine, and easy to replace essential oils.