Montre Intelligente MX9 ECG Tension Artérielle PPG Fréquence Cardiaque Moniteur

Q2 : What is PPG ?. A : PPG is photoplethysmography (PhotoPlethysmoGraphy) to monitor heart rate. Q1 : What is ECG ?. ● It can display the data total duration of your sleep last night. Relevant sleeping datd will be displayed after 08:00.

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