... . Stretchable Double tubes 3.treatment of coryza, pharyngitis,bronchitis, etc. 402AI Ultrasonic Nebulizer Descriptions: The ultrasonic nebulizer can nebulize the liquid ... big cup:350mLMax nebulizing rate: ≥ 4mL/minVoltage: AC220V±10%Picture 402AI Ultrasonic Nebulizer