Hand-held atomizer is a kind of compressed gas produced by filtered air through gas compressor to atomize the liquid medicine in the atomizing cup. Respiratory system is an open system. Drug solution is inhaled by the patient after being atomized into tiny particles. Drug mist can be directly absorbed in the patient's mouth, throat, trachea, bronchus, alveoli and so on. It can be absorbed by the mucosa to achieve the purpose of treatment. input: AC 110V-220V 50/60Hz watt: 7.5W weight: 220g battery operating life: 90 minutes nebulizing rate: 0.26ml/min nasal chamber capacity: 25ml