This device is very ideal if you are currently taking inhaled medications for asthma, chronic bronchitis, emphysema and other respiratory diseases which are limiting your lifestyle. This handheld ultrasonic nebulizer features state-of-the-art ultrasonic mesh technology. The inhalation of the 2.4MHz ultrasonic nebulizer adopts the ultrasonic cavitation to disperse the medicine liquid in the air, and make it to mist granule (aerosol). It is inhaled directly through the respiratory tract lesions in the role of a partial treatment. It makes use of this technology to produce large amount of aerosol mist and small granule of fog (0.5-5um) equably. It can also be inhaled deep to alveolus and bronchial tree, so that the medicine liquid can deposit deep in respiratory tract, and achieve the effect of health care and treatment. This product includes a 12 month warranty.