FDA approves blood oxygen and ECG monitoring smartwatch

Which smartwatches have the best SpO2 blood oxygen and ECG monitors currently?

ECG Monitor Watch, Fitness Tracker with HRV SpO2 Blood Oxygen & Pressure Sleep Monitor, V19 Waterproof Fitness Health Watch for Android iOS Phone, Smartwatch for Women Men (Black) : : Sports, Fitness

Coming to the U.S. next month, the ScanWatch's medical-grade ECG, SpO2 monitoring gets FDA approval - PhoneArena

ECG Watch Pro™ with AFib detection – VitalityWatch™

Medical-grade ECG Smartwatch ECG8 – bpdoctormed

Here's Why Apple Didn't Need FDA Approval for the Apple Watch Series 6 Blood Oxygen Tracking Feature

The Apple Watch Series 6's Blood Oxygen Monitor Didn't Require FDA Approval - Here's Why

CFDA Certification Health ECG Smartwatch With Blood Oxygen Heart Rate – Fitaos

The Best Smartwatch with SpO2 Oxygen Monitoring