ULTECHNOVO Protable Personal Spirometer Peak Flow - Expiratory Flow Meter - Spirometry Lung Function Recovery Training Device - Breathing Function Monitor for Adult

This is a portable handheld spirometer that measures your ability to exhale air from your lungs and provides accurate airway ventilation images. The peak flow meter is very suitable for athletes, and people who need oxygen and have asthma. Double flow range accurate measurement, real-time reading tracking airflow changes to detect asthma problems. The spirometer is made of premium materials, durable. The lung capacity tester can accurately measurement of peak respiratory flow is helpful for the early detection of asthma attacks.