1.Uses and functions: the USB portable mini humidifier is easy to use in the living room, bedroom, car or office and can be easily inserted into the USB port. It can increase air humidity and improve dry and itchy skin. It also has a relaxing effect 2.Usage and features: by adding a few drops of water-soluble aromatic oil to the humidifier, the room can be filled with a subtle fragrance to relax the body and mind, and to change your mood while you work or study. The humidifier also uses an improved ultrasonic transducer to fit into quiet areas without disturbing work or sleep, with an operating noise level of approximately 25 decibels. 3.Three types of feeling lamps, convenient to operate: equipped with coloured LED lamps and can switch between three types of lamps by pressing and holding the power button: RGB lamp, gradient lamp, monochromatic lamp, creating a care atmosphere. 4.Capacity of the first generation humidifier is approximately 300 ml; capacity of the second generation humidifier is approximately 270 ml; two spray modes: continuous spray mode for 4 hours, intermittent spray mode for 6 hours; mode: the humidifier automatically switches off when it runs out of water