Best Smartwatches for blood oxygen tracking

#1

One reviewer was very positive about Pulse Ox readings, saying the watch routinely matched their normal SpO2 range.

#2

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

#3

Blood oxygen readings were limited in coverage but strongly positive where tested against reference readings.

#4

Blood oxygen readings were viewed positively where tested, with one reviewer reporting very small deviations and another calling results accurate enough.

#5

Blood oxygen tracking was positively received where tested, with reviewers describing SpO2 monitoring as accurate or slightly more accurate than a comparison reading.

#6

Blood oxygen tracking received limited but positive evidence, with one reviewer saying it matched a comparison watch’s 96 percent reading impressively.

#7

Pulse Ox is considered a meaningful upgrade over the previous entry-level generation and adds depth to overnight health monitoring.

#8

Pulse Ox is welcomed as part of the expanded health package, bringing a feature that previously sat above this entry-to-midrange tier.

#9

One reviewer found blood oxygen readings close to a pulse oximeter, supporting strong SpO2 tracking confidence.

#10

Blood oxygen evidence was limited but positive, tied to a redesigned sensor that improved stability during demanding outdoor use.

#11

Blood oxygen tracking received limited but positive accuracy evidence, with one reviewer saying readings were close in testing.

#12

Blood oxygen tracking is treated as a welcome restored capability that makes the watch feel more complete as a health device.

#13

Blood oxygen readings were treated positively where tested, staying within acceptable ranges or grouped with accurate sensor results.

#14

Blood oxygen tracking received positive but cautious comments, with reviewers finding readings reliable or closely matching other devices while not treating them as medical-grade.

#15

Blood oxygen tracking received positive practical comments, including useful breathing-score context and close comparison to another oximeter-style device.

#16

Blood oxygen readings were limited in the review evidence but positive where compared directly, with one user finding pulse-ox results very close to a finger oximeter.

#17

Blood oxygen tracking received limited but positive accuracy evidence, with one reviewer calling a 1% deviation acceptable and another saying SpO2 ranges were in a good place.

#18

Blood oxygen tracking received positive but limited opinionated evidence, mainly from a reviewer who saw fewer random discrepancies than on the prior Galaxy Watch.

#19

Blood oxygen tracking was generally useful and easy once working, though one reviewer needed several attempts to get an SpO2 reading.

#20

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

#21

Blood oxygen tracking was useful but mixed: reviewers praised alignment with other devices, while one noted readings could be tricky and sometimes inconclusive.

#22

Blood oxygen tracking was generally acceptable in the limited evidence, coming close to other devices but requiring better wrist placement for accuracy.

#23

Blood oxygen tracking received limited but positive evidence as part of the BioTracker suite, which one reviewer said handled health vitals admirably.

#24

Blood oxygen readings received limited direct evaluation, but TechAdvisor found the data aligned well with other devices.

#25

Blood oxygen tracking was lightly covered but positively judged in the one review that evaluated it directly.

#26

Blood oxygen tracking was lightly praised as part of altitude mode, but only one review gave a clear positive judgment.

#27

Blood oxygen tracking is treated as a useful health metric, especially for overnight monitoring and illness awareness, though the review evidence is limited.

#28

Blood oxygen tracking receives limited but positive usefulness evidence as another health metric the reviewer liked monitoring.

#29

Blood oxygen tracking received limited but positive evidence, with one reviewer reporting readings stayed in the expected range during testing.

#30

Blood oxygen tracking was treated as a useful extra by reviewers who valued the reassurance, though broader accuracy was not deeply tested.

#31

PulseOx-related evidence centered on improved practicality, with one reviewer finding breathing-variation tracking no longer caused a notable overnight battery penalty.

#32

Blood oxygen tracking was treated as part of the watch’s broader accurate health-monitoring package in one review.

#33

Blood oxygen tracking appears as part of the watch's broader accurate health-monitoring package, but reviewers did not deeply test it as a standalone feature.

#34

Blood-oxygen spot checks looked reasonable in limited testing, though one reviewer noted slightly lower readings and recommended repeating low measurements.

#35

Blood oxygen tracking received limited but positive support, with one reviewer saying SpO2-related sleep data lined up with their patterns and baseline readings.

#36

Blood oxygen tracking was treated as part of a basic health suite that appeared to work well in daily use.

#37

SpO2 appears as part of a broader sensor suite that one reviewer says adds depth to health insights.

#38

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...

#39

Blood oxygen readings were mostly acceptable in direct comparisons, though at least one reviewer saw inconsistent one-tap results.

#40

Blood oxygen tracking was viewed as a useful basic feature and several reviewers found readings reliable or broadly accurate for a budget watch.

#41

Blood oxygen readings were mostly acceptable, but one comparison found the Lite model slightly more accurate than the Active.

#42

Blood oxygen tracking receives modestly positive evidence, with readings described as decent against an oximeter rather than perfectly accurate.

#43

Blood oxygen tracking was split: some reviewers saw close agreement with other wearables, while others found readings inconsistent or dubious.

#44

Blood oxygen results are mixed: some readings matched reference devices, while others produced erratic or dodgy spot readings.

#45

Blood oxygen tracking was treated as a useful overnight health signal, but reviewers discussed it as part of broader health-metric packages rather than as a standout feature.

#46

Blood oxygen tracking was mentioned as an advanced capability, but reviewers provided little quality-focused testing beyond noting the sensor support.

#47

Blood oxygen tracking was treated as useful when measured carefully, but movement and battery impact limited confidence.

#48

Blood oxygen tracking was treated as useful for quick altitude-adaptation checks, with positioning caveats.

#49

Blood oxygen tracking was treated as useful when measured carefully, but reviewers also warned that Pulse Ox can drain battery heavily.

#50

Blood oxygen tracking was appreciated, but evidence was split between accurate readings and complaints that on-demand or recorded SpO2 values could run low or odd.