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Main fabric composition: content: 100%

Size: closed crotch 40

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Color LCD, Handheld Rechargeable Bluetooth Spirometer, Lung Monitor PC Software Bathroom Essentials (Comes with ink cartridges)Introduction 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