Connected Portable Spirometer

Products description: hand-held equipment for examining lung function, low in power consumption, convenient in operation and portable, high-definition display screen, fit for hospital, clinique, family for ordinary test product specification: model number: sifspiro-1.1 I certificate: ce I place of origin: california, united states I brand name: sifsof or oem I color: white and black I display resolution: 160*128 I dimension: 97(l) * 89(w) * 36(h) mm I volume range: 0~10l I display mode: 1.8'' color tft display with led.