Color LCD, Handheld Rechargeable Bluetooth Spirometer, Lung Monitor PC Software Beauty Tools & Accessories compressive on pressure to protect

compressive on pressure to protect your ears

Size: S/M (For chest circumference 80-97cm) / L/XL(For chest circumference 97-109cm) (Optional)

Net content: 40g

◆ Measures Forced Vital Capacity (FVC)

Working frequency: 110-205KHz

Color LCD, Handheld Rechargeable Bluetooth Spirometer, Lung Monitor PC Software Beauty Tools & Accessories compressive on pressure to protectIntroduction The SPIROMETER is a hand held equipment for checking lung conditions, adopts the infrared signal acquisition mode for measuring items related to FVC, and is applicable for hospitals, clinics, and family routine tests. Functions Forced Vital Capacity (FVC), forced expiratory volume in one second (FEV1) to forced vital capacity (FVC) ratio (FEV1 FVC), peak expiratory flow (PEF), forced expiratory flow at 25 % of FVC (FEF25), forced