Description _x000D_ _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. _x000D_ _x000D_ Features _x000D_ _x000D_ - Color: as shown _x000D_ - Material: ABS _x000D_ - Size: 15x6x3.8cm _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. _x000D_ - Perfect for Athletes and Exercise, oxygen users and . range accurately measures for both adults & children. Instant readings track changes in air flow for detection of asthmatic issues. _x000D_ - Made of material for long lasting use. _x000D_ - Assists detection of pending _x000D_ - Instant readings help track changes in air flow. 1 x vital capacity Meter _x000D_