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. It is one of the best choice for 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 & 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. Package contains:1 x ULTECHNOVO Peak Flow Meter Note: 1. Please allow some errors due to manual measurement. Please make sure you don't mind before bidding. 2. Due to different monitors, colors may vary, please understand. Hello, please pay attention to your shipping address when purchasing products. If your delivery information (such as name, street, house number, doorbell/box without name, etc.) is incorrect, the order will not be delivered correctly. )