Best for blood oxygen tracking
Samsung Galaxy Watch 7
4.2 feature score
Highest scored product for this feature based on supporting review evidence.
Best Samsung Smart Watch for blood oxygen tracking
blood oxygen tracking Decision Dashboard
Safest pick
Samsung Galaxy Watch 8
4.1 feature score
Balances feature score, supporting reviews, and overall product strength.
Most evidence
Samsung Galaxy Watch 6
2 supporting reviews
Has the broadest review evidence for this feature.
Best overall product
Samsung Galaxy Watch Ultra (2025)
3.9 overall score
Strongest overall product among items with scored evidence for this feature.
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Blood oxygen tracking received positive but limited opinionated evidence, mainly from a reviewer who saw fewer random discrepancies than on the prior Galaxy Watch.
Pros: display quality, durability
Cons: cross-platform compatibility, antioxidant index
Blood oxygen tracking drew limited but mostly positive evidence, with one reviewer matching an oximeter while another found it weaker during sleep.
Pros: third-party app support, heart rate accuracy
Cons: music controls, cross-platform compatibility
Blood oxygen tracking drew concern because two reviewers reported overnight readings that seemed unusually or slightly low compared with other devices.
Pros: voice assistant quality, music controls
Cons: blood oxygen tracking, cross-platform compatibility
Blood oxygen evidence was limited and negative, with one review finding the overnight readings unusually low versus other wearables.
Pros: build quality, software smoothness
Cons: stress tracking, blood oxygen tracking
Blood oxygen tracking drew a clear caveat, with one reviewer repeatedly seeing lower SPO2 results than expected from other sensors.
Pros: LTE connectivity, pairing reliability
Cons: antioxidant index, blood oxygen tracking