SpirometerThe respiratory trainer consists of a mouthpiece, a main inspiration capacity chamber, indicator balls, and an air intake tube. It is used for respiratory training: exercising the diaphragm and intercostal muscles to enhance lung inhalation capacity and endurance.Style: Inverted design for both blowing and suckingInhalation capacity: 600CC/900CC/1200CC per secExhalation capacity: 1000CC/2000CC/3000CC mlMaterial: Shell (PS), balls and tube (PP)Dimensions: 17*14.5*7cm
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