Portable Spirometer Peak Flow Meter Spirometer Children's Asthma Monitoring Tool Features Product Name: Peak flow meter for children - Color: White. - Material: plastic. - Size: 14.5 x 3.5 x 3.5 cm Package includes 1 x portable spirometer - A spirometer is a portable, handheld device that measures your ability to exhale from your lungs and provides an accurate picture of airway ventilation. - Perfect for athletes and exercise, oxygen users and asthma. - Large flow range accurately measures for both adults and children. Instant readings track changes in airflow to detect asthma issues. - Made of high quality material for long lasting use. Helps detect an asthma attack. - Helps detect asthma attacks early by accurately measuring peak flow. Made of high quality material for long lasting use. Helps detect an asthma attack. The dual flow range accurately measures both adult children. Instant readings track changes in airflow to detect asthma issues. Perfect for athletes and exercise, oxygen users and asthma. Helps detect asthma attacks early by accurately measuring peak flow. A spirometer is a portable, handheld device that measures your ability to exhale from your lungs and provides an accurate picture of airway ventilation.