the Ruijing Air Compressor Nebulizer is designed for use with patients on pneumonia, bronchitis, tonsillitis and other respiratory infections and disorders. This device sprays liquid medication into fog panel by compressing air, and form tiny particles, which flow into the throat through a imbibing tube. It adopts oil-free high-efficiency valve with no need for lubrication and it is low noise. It is an ideal product for family and clinic use, and suitable for patients of all ages. 1). Special piston air pump design for powerful and quiet operation 2). Compact and lightweight 3). Easy-to-use, one-button operation 4). Breath-enhanced nebulizer design for shorter treatment time5).0-20ML medication capacity6). Ideal for all ages