Electronic peak flow meter Asuma One 40000 1 piece

The measurement is simple; just turn it on and blow into it as hard as you can for about one second. Large, easy-to-read digital display. Both PEF and FEV1 measurements and personal bests are displayed. Using Mouthpiece 20246 (paper with one-way valve, disposable) can reduce the risk of infection. Product name: Asuma One Accessories: Resin mouthpiece x 1 Display items: PEF, FEV1 Measurement accuracy: PEF/±5%, FEV1/±3% Measurement range: PEF/25-840L/min, FEV1/0-9.99L Memory: 600 times Measurement quality evaluation function included Power supply: 2 AAA batteries (test included) Size: 113 x 63 x 48mm Weight: 55g Medical device notification number: 13B2X10051000102