Peak Flow Meter 2.0 with Bluetooth, for Adults and Children to Monitor Lung Function, 300 Histotic Data Time, Asthma COPD, PEF & FEV1, Risk Symbol, App

High quality: the electronic spirometer uses differential pressure sensors and can measure two parameters PEF and FEV1. By measuring the airflow from the bronchi of the lungs and reflects the degree of airway obstruction This peak flow meter has an LCD display, so the values are clearly visible. Set a preset value before use, and each test shows the status of your lung function with a risk indicator (red, yellow, green). Note: No expectation value, without risk indicator Built-in app and 300 different devices: our digital peak flow meter can connect to the app via Bluetooth so that the data is automatically synchronised with the mobile phone. It can store 300 test data with current time. Your test results are shared with your caregiver via ePEF app to better control respiratory health Portable and easy to use: the pocket spirometer is rechargeable (a USB cable included) that allows you to take it anywhere. A single full charge for more than 6 months of use. Note: Please charge the device approx. 2 hours before first use. When the device displays the battery symbol x, it must be charged with a 5V adapter 2 different removable mouthpieces: the product is equipped with 2 different removable mouthpieces. You can choose the best fit for your mouth shape to achieve more accurate test results. It can be cleaned, wiped with alcohol, do not worry about bacterial residue. We offer professional after-sales service and will solve your problem within 24 hours