This device is very accurate and the extra deliverd spo2 meter is a very handy tool!! i took this one to the doctor and gave the same results as the one my doctor has! highly reccomend this product
The device performs its functions and steandalone measures blood pressure quite accurately. But if you need a device for transferring data to a smartphone or collecting patient data, I do not recommend this BP monitor. The software works only with android since version 5.0+ (so I ned to replace my phone), software functionality is too small, inconvenient interface and the need to register a new account to transfer data to the Viatom company's cloud. There is no data export to CSV or any TXT format. Guest mode (without registration in viatom cloud) for application only indicate blood pressure when you press button on device.