[2021] — Marina Y161

Using a 4-channel photoplethysmography (PPG) sensor, the Y161 samples heart rate every second during workouts and every 10 minutes at rest. The ECG (Electrocardiogram) function is FDA-approved for detecting Atrial Fibrillation (AFib). Users place a finger on the digital crown for 30 seconds to generate a single-lead ECG waveform readable directly on the companion app.