Description_x005F_x005F_x005F_x000D__x005F_x005F_x005F_x000D_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 vital capacity meter must meet you needs. It is one of the best choices for you._x005F_x005F_x005F_x000D__x005F_x005F_x005F_x000D_Features_x005F_x005F_x005F_x000D__x005F_x005F_x005F_x000D_- Color: as shown_x005F_x005F_x005F_x000D_- Material: ABS_x005F_x005F_x005F_x000D_- Size: 15x6x3.8cm_x005F_x005F_x005F_x000D_- Spirometer is a portable, hand-held device that measures your ability to exhale air from your lungs and provides a accurate picture of airway ventilation._x005F_x005F_x005F_x000D_- Perfect for Athletes and Exercise, oxygen users and asthma. Dual flow range accurately measures for both adults & children. Instant readings track changes in air flow for detection of asthmatic issues._x005F_x005F_x005F_x000D_- Made of material for long lasting use._x005F_x005F_x005F_x000D_- Assists detection of pending asthma attack