Best Smart Watch for blood oxygen tracking

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Best for blood oxygen tracking

Apple Watch Series 11

4.5 feature score

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

Safest pick

Withings ScanWatch Nova

4.5 feature score

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

Most evidence

Withings ScanWatch 2

13 supporting reviews

Has the broadest review evidence for this feature.

Best overall product

Samsung Galaxy Watch 6

4.3 overall score

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

#1 Apple Watch Series 11
4.5
7 reviews

Blood oxygen tracking is cited as available or returned in the US, adding to the broader health sensor suite.

Pros: contactless payments, pairing reliability

Cons: cross-platform compatibility, recovery insights

#2 Withings ScanWatch Nova
4.5
10 reviews

Blood oxygen tracking is consistently treated as a useful core health feature, usually easy to trigger and presented clearly in the app.

Pros: software smoothness, safety features

Cons: contactless payments, music controls

#3 Garmin Approach S70
4.4
3 reviews

Pulse ox and blood oxygen tracking are present in several reviews and treated as part of the S70’s higher-end health sensor package.

Pros: pairing reliability, brightness

Cons: software smoothness, user interface

#4 Samsung Galaxy Watch FE
4.3
5 reviews

Reviewers consistently note SpO2 or blood oxygen tracking as part of the FE's health feature set.

Pros: workout tracking variety, materials quality

Cons: size options, cross-platform compatibility

#5 Garmin Forerunner 965
4.3
8 reviews

The Forerunner 965 supports Pulse Ox or blood oxygen readings, and reviewers treat it as part of a broad health-sensor suite rather than a headline differentiator.

Pros: mapping and navigation, watch face quality

Cons: ECG functionality, LTE connectivity

#6 Garmin Epix Pro (Gen 2)
4.3
2 reviews

Blood oxygen tracking is present through wrist-based pulse oximetry, with one reviewer reporting readings stayed in the expected 95-100% range.

Pros: mapping and navigation, GPS accuracy

Cons: voice assistant quality, call handling

#7 Garmin Tactix 8
4.2
3 reviews

Blood oxygen support was mentioned as part of the health suite, including respiratory-health context and oxygen saturation readings.

Pros: materials quality, durability

Cons: LTE connectivity, value for money

#8 Xiaomi Watch 2 Pro
4.2
8 reviews

Blood oxygen tracking is widely present, including overnight SpO2 in some setups, and one sports test found pulse-oximeter deviation acceptable.

Pros: materials quality, Bluetooth connectivity

Cons: ECG functionality, reliability

#9 Garmin Venu 3
4.2
5 reviews

Blood oxygen support was repeatedly noted as part of the broader health sensor package, including optional all-day tracking in some accounts.

Pros: heart rate accuracy, display quality

Cons: LTE connectivity, third-party app support

#10 Amazfit Active 3 Premium
4.2
6 reviews

Blood oxygen tracking is repeatedly listed among the health features and background sensor options.

Pros: outdoor visibility, software smoothness

Cons: ECG functionality, LTE connectivity

#11 Polar Vantage M3
4.2
5 reviews

Blood oxygen tracking is consistently listed as part of the upgraded health sensor package.

Pros: workout tracking variety, outdoor visibility

Cons: call handling, voice assistant quality

#12 Huawei Watch Fit 4 Pro
4.2
2 reviews

Reviewers confirm SpO2 or blood oxygen tracking is included as part of the broader health sensor suite.

Pros: workout tracking variety, software smoothness

Cons: LTE connectivity, Wi-Fi connectivity

#13 TicWatch Pro 5
4.2
9 reviews

Blood oxygen support is broadly present through SpO2 sensors, one-tap measurements, and health tiles, though evidence focuses more on availability than clinical depth.

Pros: battery life, pairing reliability

Cons: ECG functionality, LTE connectivity

#14 Amazfit Active 2
4.2
7 reviews

Blood oxygen tracking is widely available and sometimes tested well, including a very small deviation in one review, though most reviewers treat it as a wellness metric rather than medical...

Pros: workout tracking variety, value for money

Cons: ECG functionality, LTE connectivity

#15 Google Pixel Watch 4
4.2
3 reviews

Blood oxygen tracking is repeatedly listed as part of the health suite, alongside heart rate, sleep, skin temperature and Fitbit health metrics.

Pros: outdoor visibility, charging speed

Cons: stress tracking, band quality

#16 Samsung Galaxy Watch 7
4.2
2 reviews

Blood oxygen tracking is available and tied into sleep and health data, with one reviewer noting fewer random discrepancies than on the prior model.

Pros: user interface, build quality

Cons: antioxidant index, cross-platform compatibility

#17 Garmin Venu 4
4.1
7 reviews

Pulse Ox and blood-oxygen tracking are repeatedly included as part of the watch’s overnight health-status and wellness stack rather than singled out as a major standalone strength.

Pros: outdoor visibility, brightness

Cons: LTE connectivity, charging convenience

#18 Garmin Venu X1
4.1
6 reviews

Blood oxygen or SpO2 tracking is repeatedly listed as part of Garmin's health sensor package, but the reviews offer little detailed accuracy testing for that metric specifically.

Pros: pairing reliability, watch face quality

Cons: LTE connectivity, ECG functionality

#19 Apple Watch Ultra 3
4.1
5 reviews

Blood oxygen tracking is treated as part of Apple’s broad health suite, with reviewers noting SpO2 or Blood Oxygen availability rather than deeply testing accuracy.

Pros: pairing reliability, app ecosystem

Cons: cross-platform compatibility, size options

#20 Xiaomi Redmi Watch 5 Lite
4.1
5 reviews

Blood oxygen tracking is broadly present and configurable, with reviews noting SpO2 measurement, alerts, and one comparison that favored the Lite's reading.

Pros: workout tracking variety, value for money

Cons: ECG functionality, third-party app support

#21 Xiaomi Watch 2
4.1
8 reviews

Blood oxygen tracking is widely present and generally useful, with several reviewers noting all-day or nighttime SpO2 support and one comparison showing close readings.

Pros: charging speed, workout tracking variety

Cons: ECG functionality, LTE connectivity

#22 Amazfit T-Rex 3 Pro
4.1
5 reviews

Blood oxygen tracking is present and was specifically praised in one comparison, with reviewers noting SPO2 support alongside broader health sensors.

Pros: calorie tracking usefulness, cross-platform compatibility

Cons: ECG functionality, LTE connectivity

#23 Garmin Lily 2 Active
4.1
4 reviews

Pulse Ox and SpO2 support is clearly present, with reviewers calling out overnight tracking, spot checks, and accurate-looking readings.

Pros: comfort, style and design

Cons: ECG functionality, onboard music storage

#24 Garmin Forerunner 165
4.1
4 reviews

The watch includes blood oxygen or Pulse Ox tracking, but reviewers treated it as a useful health sensor rather than a headline reason to buy.

Pros: brightness, outdoor visibility

Cons: ECG functionality, voice assistant quality

#25 Huawei Watch Fit 4
4.1
4 reviews

SpO2 tracking is present and repeatedly included among the watch's health metrics, with reviewers treating it as part of a solid wellness set.

Pros: step counting accuracy, onboard music storage

Cons: ECG functionality, Wi-Fi connectivity

#26 Garmin fenix 8 Pro
4.1
2 reviews

Blood oxygen support appeared through Pulse Ox and pulse oximeter references, mainly as part of the broader health-tracking sensor set.

Pros: pairing reliability, workout tracking variety

Cons: size options, value for money

#27 Garmin Vivomove Sport
4.0
10 reviews

Blood oxygen tracking is widely supported through Pulse Ox or SpO2, including sleep, spot checks, or all-day options, with one test finding readings mostly in a normal range.

Pros: activity auto-detection, comfort

Cons: voice assistant quality, onboard music storage

#28 Garmin Approach S62
4.0
7 reviews

Blood oxygen or Pulse Ox tracking appeared in many reviews as part of the S62's wellness feature set, although reviewers mostly discussed its presence rather than clinical accuracy.

Pros: battery life, GPS accuracy

Cons: voice assistant quality, onboard music storage

#29 Garmin Forerunner 955
4.0
7 reviews

Blood oxygen tracking is well represented through Pulse Ox, sleep/altitude use cases, Health Snapshot, and sensor descriptions, but reviewers also note battery drain and that readings require proper conditions.

Pros: charging speed, workout tracking variety

Cons: voice assistant quality, LTE connectivity

#30 Casio G-Shock GBD-H2000
4.0
6 reviews

Blood oxygen tracking is present and usually discussed as part of the improved sensor package, though it is not deeply tested in every review.

Pros: water resistance, activity auto-detection

Cons: ECG functionality, call handling

#31 Garmin Forerunner 970
4.0
4 reviews

Blood oxygen support is present through PulseOx or SpO2, and reviewers also tied it to breathing disturbance and broader sensor tracking.

Pros: button controls, GPS accuracy

Cons: LTE connectivity, size options

#32 Garmin Forerunner 570
4.0
3 reviews

Blood oxygen tracking is present and used in overnight health tracking, but reviewers mention it as part of the health suite rather than a standout accuracy feature.

Pros: outdoor visibility, brightness

Cons: ECG functionality, LTE connectivity

#33 Amazfit Bip 6
4.0
10 reviews

Blood oxygen tracking is consistently listed as part of the health suite, usually alongside heart rate, stress, and breathing-rate measurements.

Pros: workout tracking variety, brightness

Cons: ECG functionality, LTE connectivity

#34 Amazfit GTR Mini
4.0
7 reviews

Blood oxygen tracking is consistently present across the reviews, usually described as part of the watch's 24-hour health sensor suite.

Pros: value for money, comfort

Cons: contactless payments, onboard music storage

#35 Suunto Vertical 2
4.0
6 reviews

Blood oxygen tracking is present and repeatedly mentioned as part of the health suite, with one reviewer noting more stable readings from the redesigned sensor.

Pros: cross-platform compatibility, outdoor visibility

Cons: onboard music storage, contactless payments

#36 Xiaomi Redmi 5 Active
4.0
6 reviews

Blood oxygen tracking is consistently available and usually treated as a credible basic health metric for this budget watch.

Pros: touchscreen responsiveness, software smoothness

Cons: contactless payments, onboard music storage

#37 Amazfit Balance 2
4.0
5 reviews

Blood oxygen tracking is present as part of the health sensor suite, with reviewers noting SPO2/blood-oxygen readings alongside heart-rate and stress data.

Pros: water resistance, workout tracking variety

Cons: ECG functionality, LTE connectivity

#38 Garmin Forerunner 265
4.0
5 reviews

Blood oxygen tracking is present through Garmin's Pulse Ox or SpO2 readings and is repeatedly listed among the watch's health metrics.

Pros: GPS accuracy, brightness

Cons: ECG functionality, voice assistant quality

#39 Suunto Run
4.0
5 reviews

Blood oxygen and pulse-ox tracking are present on the watch, though reviewers mostly treated it as a supported wellness feature rather than deeply testing accuracy.

Pros: comfort, value for money

Cons: Wi-Fi connectivity, contactless payments

#40 Amazfit T-Rex Ultra 2
4.0
4 reviews

Blood oxygen tracking is consistently present in the health stack, with reviews citing SpO2 or blood oxygen monitoring alongside heart-rate and stress features.

Pros: brightness, water resistance

Cons: reliability, customization options

#41 CMF Watch 3 Pro
4.0
4 reviews

Blood oxygen tracking is present, with alerts or spot readings mentioned, and one reviewer found readings close to a pulse oximeter, though reviewers did not deeply validate it.

Pros: workout tracking variety, operating system experience

Cons: contactless payments, Wi-Fi connectivity

#42 Fitbit Versa 4
4.0
4 reviews

Blood oxygen tracking is present through SpO2/oxygen saturation readings, usually discussed as part of overnight health metrics rather than as a headline feature.

Pros: pairing reliability, brightness

Cons: third-party app support, music controls

#43 Garmin Approach S50
4.0
4 reviews

Blood oxygen tracking is present through Pulse Ox, with reviewers noting both the sensor and sleep/on-demand measurement behavior.

Pros: software smoothness, GPS accuracy

Cons: voice assistant quality, call handling

#44 Garmin Fenix 8
4.0
4 reviews

Blood oxygen and SpO2 support were confirmed by multiple reviewers, mostly as part of the broader health-sensor suite rather than a deeply tested standout.

Pros: workout tracking variety, durability

Cons: LTE connectivity, value for money

#45 Garmin Forerunner 255S
4.0
4 reviews

Blood oxygen tracking is present for sleep or daytime monitoring, but reviews treat it as one metric among many rather than a standout feature.

Pros: reliability, fit

Cons: touchscreen responsiveness, third-party app support

#46 Motorola Moto Watch Fit
4.0
4 reviews

Blood oxygen tracking is consistently present in the health suite, though reviewers discuss it more as a supported metric than a deeply tested standout.

Pros: fit, battery life

Cons: call handling, voice assistant quality

#47 Amazfit T-Rex 3
4.0
3 reviews

Blood oxygen tracking is consistently present as part of the health sensor suite, usually mentioned alongside HRV, skin temperature, and stress monitoring rather than deeply tested.

Pros: workout tracking variety, water resistance

Cons: ECG functionality, LTE connectivity

#48 CMF Watch Pro 2
4.0
3 reviews

Blood oxygen tracking is present and often works acceptably for spot or continuous readings, though it is part of a broader basic health-tracking package.

Pros: pairing reliability, workout tracking variety

Cons: ECG functionality, contactless payments

#49 Garmin Vivoactive 6
4.0
3 reviews

Blood oxygen tracking is present as part of the health sensor set, but reviewers mostly mention availability rather than detailed accuracy testing.

Pros: comfort, software smoothness

Cons: ECG functionality, LTE connectivity

#50 Garmin Vivomove Style
4.0
3 reviews

Blood oxygen tracking is consistently presented as an included Garmin health sensor through Pulse Ox or blood oxygen monitoring.

Pros: cross-platform compatibility, water resistance

Cons: call handling, third-party app support