Best Samsung Smartwatches for blood oxygen tracking

blood oxygen tracking Decision Dashboard

Best for blood oxygen tracking

Samsung Galaxy Watch 9

5.0 attribute score

Highest scored product for this attribute based on supporting review evidence.

Safest pick

Samsung Galaxy Watch 7

4.2 attribute score

Balances the attribute score, supporting reviews, and overall product strength.

Most evidence

Samsung Galaxy Watch 8

2 supporting reviews

Has the broadest review evidence for this attribute.

Best overall product

Samsung Galaxy Watch Ultra 2

4.2 overall score

Strongest overall product among items with scored evidence for this attribute.

#1 Samsung Galaxy Watch 9
5.0

Blood-oxygen readings looked very close to a medical-grade pulse oximeter in one direct comparison, giving this metric a strong accuracy result.

Pros: software smoothness, wellness insights

Cons: battery life, charging speed

#2 Samsung Galaxy Watch 7
4.2

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: value for money, wellness insights

Cons: battery life, cross-platform compatibility

#3 Samsung Galaxy Watch 8
4.1

Blood oxygen tracking drew limited but mostly positive evidence, with one reviewer matching an oximeter while another found it weaker during sleep.

Pros: comfort, voice assistant quality

Cons: battery life, antioxidant index

#4 Samsung Galaxy Watch Ultra 2
4.0

Blood-oxygen tracking is described as working normally alongside the watch’s other core health sensors. There is little standalone testing of SpO2 accuracy, so confidence is more limited than for heart...

Pros: battery life, comfort

Cons: value for money, charging speed

#5 Samsung Galaxy Watch 6
2.3

Blood oxygen tracking drew concern because two reviewers reported overnight readings that seemed unusually or slightly low compared with other devices.

Pros: software smoothness, comfort

Cons: battery life, GPS accuracy

#6 Samsung Galaxy Watch Ultra (2024)
2.0

Blood oxygen evidence was limited and negative, with one review finding the overnight readings unusually low versus other wearables.

Pros: battery life, sleep tracking accuracy

Cons: wellness insights, style and design

#7 Samsung Galaxy Watch Ultra (2025)
2.0

Blood oxygen tracking drew a clear caveat, with one reviewer repeatedly seeing lower SPO2 results than expected from other sensors.

Pros: battery life, display quality

Cons: value for money, antioxidant index