Best for blood oxygen tracking
Polar Vantage M3
4.0 feature score
Highest scored product for this feature based on supporting review evidence.
Best Polar Smart Watch for blood oxygen tracking
blood oxygen tracking Decision Dashboard
Safest pick
Polar Grit X2 Pro
3.5 feature score
Balances feature score, supporting reviews, and overall product strength.
Most evidence
Polar Street X
2 supporting reviews
Has the broadest review evidence for this feature.
Best overall product
Polar Pacer Pro
3.7 overall score
Strongest overall product among items with scored evidence for this feature.
Narrow by brand
Showing Polar only. Switch back to all brands anytime.
SpO2 appears as part of a broader sensor suite that one reviewer says adds depth to health insights.
Pros: brightness, display quality
Cons: call handling, voice assistant quality
Blood oxygen tracking was treated as useful for quick altitude-adaptation checks, with positioning caveats.
Pros: recovery insights, build quality
Cons: contactless payments, onboard music storage
Blood oxygen was a clear limitation because reviewers noted the Street X lacks SpO2 measurement, especially compared with what similarly priced watches often include.
Pros: workout tracking variety, flashlight usefulness
Cons: blood oxygen tracking, ECG functionality
Blood oxygen tracking was treated as a notable omission, with one review saying the missing SpO2 sensor held the watch back from a higher rating.
Pros: wellness insights, coaching features
Cons: mapping and navigation, contactless payments
Blood oxygen tracking was treated as a notable missing health sensor rather than a working feature.
Pros: workout tracking variety, activity auto-detection
Cons: onboard music storage, blood oxygen tracking
Blood oxygen tracking was a clear gap where mentioned; reviewers framed the missing SpO2 capability as a shortcoming versus rivals.
Pros: workout tracking variety, build quality
Cons: blood oxygen tracking, onboard music storage