Are you looking for a professional, yet affordable vital capacity meter Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once If yes, look no further! Our professional vpeak flow spirometer must meet you needs. It is one of the best choice for you. Features - Color: As shown. - Material: ABS. - Size: 15 x 5 x 3 cm. - The spirometer is a portable, hand-held device that cab measure your ability to exhale air from your lungs and provides an accurate picture of airway ventilation. - Perfect for Athletes and Exercise, oxygen users and asthma. - Dual flow range accurately measures for both adults and children. Instant readings track changes in air flow for detection of asthmatic issues. - Made of material for long lasting use. Assists detection of pending asthma attacking. - Assists in early detection of asthma attacks by accurately measuring peak flow. Packing list: 1 x Peak Flow Meter