Best Smart Watch for blood oxygen tracking

blood oxygen tracking Decision Dashboard

Best for blood oxygen tracking

Garmin Lily 2 Active

5.0 feature score

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

Safest pick

OnePlus Watch 3

4.9 feature score

Balances feature score, supporting reviews, and overall product strength.

Most evidence

Apple Watch SE 3

18 supporting reviews

Has the broadest review evidence for this feature.

Best overall product

Apple Watch Series 11

4.3 overall score

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

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#1 Garmin Lily 2 Active
5.0
1 review

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

Pros: health tracking accuracy, blood oxygen tracking

Cons: ECG functionality, onboard music storage

#2 OnePlus Watch 3
4.9
2 reviews

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

Pros: blood oxygen tracking, step counting accuracy

Cons: LTE connectivity, calorie tracking usefulness

#3 Amazfit Active 2
4.5
2 reviews

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

Pros: pairing reliability, value for money

Cons: stress tracking, onboard music storage

#4 Xiaomi Redmi Watch 5 Lite
4.5
2 reviews

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

Pros: cross-platform compatibility, pairing reliability

Cons: third-party app support, contactless payments

#5 Amazfit T-Rex 3 Pro
4.5
1 review

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

Pros: workout tracking variety, calorie tracking usefulness

Cons: LTE connectivity, ECG functionality

#6 Garmin Forerunner 965
4.5
1 review

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

Pros: water resistance, workout tracking variety

Cons: LTE connectivity, ECG functionality

#7 Suunto Vertical 2
4.5
1 review

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

Pros: operating system experience, materials quality

Cons: contactless payments, onboard music storage

#8 Xiaomi Redmi Watch 5
4.5
1 review

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

Pros: step counting accuracy, display quality

Cons: voice assistant quality, contactless payments

#9 Apple Watch Series 11
4.4
2 reviews

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

Pros: ECG functionality, app ecosystem

Cons: cross-platform compatibility, recovery insights

#10 Huawei Watch GT 6 Pro
4.4
2 reviews

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

Pros: fitness tracking accuracy, display quality

Cons: voice assistant quality, LTE connectivity

#11 Huawei Watch Fit 4
4.4
3 reviews

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.

Pros: step counting accuracy, menu navigation

Cons: voice assistant quality, contactless payments

#12 Xiaomi Watch 2
4.3
3 reviews

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

Pros: charging speed, Bluetooth connectivity

Cons: ECG functionality, recovery insights

#13 CMF Watch 3 Pro
4.3
2 reviews

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.

Pros: workout tracking variety, user interface

Cons: Wi-Fi connectivity, onboard music storage

#14 Xiaomi Watch 2 Pro
4.3
2 reviews

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.

Pros: pairing reliability, outdoor visibility

Cons: ECG functionality, running power support

#15 Samsung Galaxy Watch 7
4.2
1 review

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

#16 Withings ScanWatch Nova
4.2
4 reviews

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

Pros: battery life, heart rate accuracy

Cons: third-party app support, GPS accuracy

#17 Samsung Galaxy Watch 8
4.1
2 reviews

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

#18 Withings ScanWatch 2
4.0
4 reviews

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

Pros: Bluetooth connectivity, pairing reliability

Cons: third-party app support, contactless payments

#19 Amazfit GTR Mini
4.0
2 reviews

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

Pros: pairing reliability, workout tracking variety

Cons: contactless payments, onboard music storage

#20 Amazfit Balance 2
4.0
1 review

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

Pros: Bluetooth connectivity, calorie tracking usefulness

Cons: ECG functionality, flashlight usefulness

#21 Amazfit Bip 6
4.0
1 review

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

Pros: value for money, battery life

Cons: contactless payments, stress tracking

#22 Casio G-Shock GBD-H2000
4.0
1 review

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

Pros: brightness, charging convenience

Cons: ECG functionality, stress tracking

#23 Coros Apex 2
4.0
1 review

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

Pros: resume later function, durability

Cons: watch face quality, call handling

#24 Fitbit Sense 2
4.0
1 review

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

Pros: pairing reliability, durability

Cons: music controls, Wi-Fi connectivity

#25 Garmin Approach S70
4.0
1 review

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

Pros: recovery insights, GPS accuracy

Cons: software smoothness, fitness tracking accuracy

#26 Garmin Epix Pro (Gen 2)
4.0
1 review

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

Pros: GPS accuracy, charging speed

Cons: ECG functionality, voice assistant quality

#27 Garmin Forerunner 165
4.0
1 review

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

Pros: smartphone notifications, watch face quality

Cons: music controls, Wi-Fi connectivity

#28 Garmin Forerunner 970
4.0
1 review

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

Pros: stress tracking, customization options

Cons: menu navigation, companion app quality

#29 Garmin Vivoactive 5
4.0
1 review

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

Pros: fitness tracking accuracy, wellness insights

Cons: software smoothness, ECG functionality

#30 Garmin Vivoactive 6
4.0
1 review

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.

Pros: software smoothness, comfort

Cons: LTE connectivity, voice assistant quality

#31 Garmin Vivomove Sport
4.0
1 review

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

Pros: pairing reliability, reliability

Cons: contactless payments, onboard music storage

#32 Google Pixel Watch 3
4.0
1 review

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

Pros: outdoor visibility, pairing reliability

Cons: calorie tracking usefulness, materials quality

#33 Motorola Moto Watch Fit
4.0
1 review

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

Pros: software smoothness, menu navigation

Cons: contactless payments, stress tracking

#34 Polar Vantage M3
4.0
1 review

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

#35 TicWatch Pro 5
3.9
3 reviews

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

Pros: contactless payments, battery life

Cons: voice assistant quality, LTE connectivity

#36 CMF Watch Pro 2
3.9
4 reviews

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

Pros: pairing reliability, materials quality

Cons: data privacy, health tracking accuracy

#37 Xiaomi Redmi 5 Active
3.8
2 reviews

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

Pros: wellness insights, Bluetooth connectivity

Cons: contactless payments, third-party app support

#38 Amazfit Bip 5
3.7
1 review

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

Pros: comfort, touchscreen responsiveness

Cons: calorie tracking usefulness, onboard music storage

#39 Ticwatch Pro 5 Enduro
3.6
3 reviews

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

Pros: menu navigation, battery life

Cons: ECG functionality, voice assistant quality

#40 Ticwatch Atlas
3.5
3 reviews

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

Pros: touchscreen responsiveness, software smoothness

Cons: ECG functionality, LTE connectivity

#41 Fitbit Versa 4
3.5
2 reviews

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.

Pros: pairing reliability, user interface

Cons: third-party app support, music controls

#42 Suunto Run
3.5
2 reviews

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

Pros: comfort, value for money

Cons: contactless payments, Wi-Fi connectivity

#43 Garmin Forerunner 955
3.5
1 review

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

Pros: outdoor visibility, charging speed

Cons: LTE connectivity, call handling

#44 Polar Grit X2 Pro
3.5
1 review

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

#45 Garmin MARQ Gen 2
3.3
3 reviews

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

Pros: pairing reliability, reliability

Cons: size options, call handling

#46 Garmin Venu Sq 2
3.2
3 reviews

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.

Pros: charging speed, coaching features

Cons: ECG functionality, call handling

#47 Garmin Approach S50
3.2
1 review

Blood oxygen tracking was viewed as adequate but not cutting edge because reviewers noted the older Gen 4 sensor platform rather than Garmin’s newest hardware.

Pros: touchscreen responsiveness, health tracking accuracy

Cons: call handling, voice assistant quality

#48 Garmin Forerunner 255
3.2
2 reviews

Pulse Ox was mixed: one reviewer said still readings can be good, while another warned watch-based SpO2 was not consistent enough to rely on.

Pros: durability, cross-platform compatibility

Cons: stress tracking, app ecosystem

#49 Casio G-Shock DW-H5600
3.1
5 reviews

Blood oxygen tracking is useful as a spot-check feature, but reviewers reported stillness requirements and occasional errors.

Pros: durability, outdoor visibility

Cons: app ecosystem, third-party app support

#50 Coros Pace Pro
3.0
1 review

Blood oxygen support was treated as limited because reviewers noted it as more of an on-demand or altitude-oriented feature rather than a deeply used health metric.

Pros: outdoor visibility, display quality

Cons: contactless payments, flashlight usefulness