Are you looking f a professional, yet affdable vital capacity meter? Are you in search of a sturdy, trustwthy 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 f you. Features - Col: As shown. - Material: ABS. - Size: 15 x 5 x 3 cm. - The spirometer is a ptable, h-held device that cab measure your ability to exhale air from your lungs provides an accurate picture of airway ventilation. - Perfect f Athletes Exercise, oxygen users asthma. - Dual flow range accurately measures f both adults andamp; children. Instant readings track changes in air flow f detection of asthmatic issues. - Made of material f 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