Which sensor count is more important?

18 Tem 19:01

For EKG and stress tracking, you're getting clinical-grade features that most bands dumb down for marketing. Real EKG capability (not just rhythm snippets) requires proper electrodes and FDA/CE clearance—Garmin Venu 3, Withings ScanWatch, and Polar Vantage V3 are the only ones that actually pull it off. If you care about atrial fibrillation or PVCs, skip the cheap-combo models; those sensors are borderline placebo. SPO2 and HR are maintenance reads, useful for sleep or recovery trending, but neither flags emergencies like an arrhythmia. Toss in motion+sleep data and you’ve got ~80% of what athletes actually coach on—resting HR trends, HRV for stress, and SpO2 drops in altitude/sickness. So if you’re fit and curious: 80% combo with EKG. If you just want “good enough” without feature bloat, grab the 90% HR+SpO2 band and save $100.