The Xiaomi Watch H1 measures blood pressure - and is already certified as a medical device in China and the USA. But it looks like a watch.
Xiaomi Watch H1: This watch even measures blood pressure - Galaxus
Original Xiaomi watch H1 ECG blood pressure heart rate pressure
Xiaomi Watch H1 debuts as medical grade smartwatch that can take
Xiaomi Watch H1 debuts as medical grade smartwatch that can take
Original Xiaomi watch H1 ECG blood pressure heart rate pressure
Xiaomi Watch H1 debuts as medical grade smartwatch that can take
Xiaomi Watch H1 Boasts Medical-Grade Blood Pressure and ECG
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Xiaomi Watch H1 1.43'' AMOLED Blood Pressure Health Monitoring