Smartwatches with an oxygen sensor and SpO2 monitoring

Smartwatches track blood oxygenation levels for offering SpO2 monitoring. Oxygen tracking is an essential characteristic of most smartwatches. Below, we look at the watches that offer blood oxygenation monitoring. Some people may call this as SpO2 tracking. These smartwatch models are in contemporary demand and can be relied upon for wrist based oxygen saturation monitoring.

Apple Watch 7 and Apple Watch 6

For the Apple ecosystem comprising of iPhones, an Apple Watch 7 tracks blood oxygenation levels. Apple Watch 6 and onwards have the blood oxygenation sensor. Both watch models have the ability to measure SpO2 saturation. The readings are accurate and reliable.


The only thing worth confirming is that an Apple Watch can only work with iOS devices. You definitely will need an iPhone to make it work.

Fitbit Versa 3 and Fitbit Versa 2

Both, Fitbit Versa 3 and Fitbit Versa 2 have the feature of monitoring blood oxygenation levels through a wrist based sensor. One of the best aspects of getting a Fitbit Versa 2 or Fitbit Versa 3 is that both watches are valued for money propositions. Both watch models have been around for at least a year. Fitbit app has a stable app operating system. Fitbit app and the Fitbit Versa 2 and the Fitbit Versa 3 operating systems have a seamless integration.


For simple and classic smartwatch needs, a Fitbit Versa 3 or a Fitbit Versa 2 ticks all the boxes. Both, Fitbit Versa 2 and Fitbit Versa 3 are compatible with iOS and Android. So, both watches can pair with an iPhone or Android phone. You will need to check the exact version of iOS and Android operating system versions that support compatibility with a Fitbit Versa 2 or Fitbit Versa 3.

Fitbit Sense

Fitbit Sense is an upgrade over Fitbit Versa 3. It has carved its place as a smartwatch with health and wellness tracking. It has the feature to track SpO2 saturation or blood oxygenation levels. A Fitbit Sense based on the Fitbit operating system would do well in tracking blood oxygenation levels.


Another advantage of Fitbit Sense is that it is compatible with Android and IOS ecosystems. So, a Fitbit Sense will work seamlessly on an iPhone or an Android phone.

Samsung Watch 4 and Samsung Watch 3

The latest Galaxy Watch, Samsung Watch 4, is a sleek watch with an in-built blood oxygenation sensor. It can track blood oxygenation levels. Samsung Watch 4 is only compatible with an Android phone. It works best with a Galaxy smartphone, as it can offer heart monitoring through the Galaxy Health app on the Galaxy smartphone.


One thing that you may want to check on a Samsung Watch 4 has to be the overheating issue for some watch models. It may be wise to just be sure of the overheating issues.

Samsung Watch 3 also supports blood oxygenation tracking. So, if you wish to save money and buy an Android smartwatch with SpO2 monitoring, a Samsung watch 3 is a decent watch model for the health tracking features.

Garmin Vivoactive 4

Garmin Vivoactive 4 watch is a budget Garmin smartwatch model that has an in-build blood oxygen monitoring sensor. Vivoactive 4 model is a good option for people looking at Fitbit Versa 2, Fitbit Versa 3, or the Fitbit Sense watches. The price falls in the same bracket. And, a Vivoactive 4 is compatible with iOS and Android ecosystems.

Garmin Fenix 6

Garmin Fenix 6 is right on the top when it comes to health and wellness monitoring. A Fenix 6 smartwatch can work with iPhone and Android smartphones. It does not come for cheap. However, it works best for people who wish to track outdoor activities and health parameters.


A Garmin Fenix 6 watch supports blood oxygenation tracking and measures the SpO2 saturation levels through a wrist based sensor. Incidentally, blood oxygenation monitoring is unavailable on Garmin Fenix 5. So, the SpO2 monitoring became a part of the Fenix ecosystem on the Garmin Fenix 6 watch model.

Garmin Venu 2 and Garmin Venu 2S

Garmin Venu and Garmin Venu 2S watch models have blood oxygenation levels and monitor SpO2 saturation through wrist-based sensors. Garmin’s Venu and Venu 2S are compatible with iPhone and Android mobile phones. Both watches are premium smartwatch offerings and have a stable feature set based on the Garmin operating system.

Amazfit GTR2

Amazfit GTR2 is quite a popular smartwatch model that is compatible with Android and iOS ecosystems. It helps you track blood oxygenation levels. It is a good budget smartwatch model. Of the listed smartwatch models on this page, an Amazfit GTR2 is the most economical watch model that offers a blood oxygen tracking feature.


If you are looking for a plain and simple smartwatch model that supports blood oxygenation monitoring, a Fitbit smartwatch should do well to meet your expectations. Garmin Vivoactive 4 and 4S fit the bill as well. Topline watch models, like the Garmin series and the Apple Watch model 6 and onwards have a rich set of features, including blood oxygen sensors and SpO2 monitoring.

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