Is a Pulse Oximeter Smartwatch Reliable for Measuring Blood Oxygen Saturation Levels?

If you’re a die-hard fan of smartwatches, you surely know that blood oxygen monitoring is now a standard feature. When you’re at a high altitude or tracking your sleep. It might warn you about possible problems like sleep apnea and other respiratory ailments that need medical treatment.

Except for inexpensive models, the SpO2 sensor is becoming a common feature of fitness watches. However, some models are more effective than others in giving you access to that data or continuously monitoring it without reducing battery life.

We’ve picked up some of the best SpO2 watch with blood oxygen monitoring, starting with the Garmin Forerunner 255.

What is a Pulse Oximeter Watch?

A smart watch with pulse oximeter, also known as a SpO2 sensor, is a sensor that uses light to determine both your pulse and your blood’s “sats” or oxygen saturation level. Previously only found in medical facilities, they are now increasingly found in fitness trackers, and even smartphones, enabling quick and simple sat checks wherever you may be.

Can a Pulse Oximeter Smartwatch Aid in the Early Detection of Coronavirus?

Due to their connection to Covid-19, pulse oximeters have garnered a lot of news in recent years. You may monitor the blood oxygen levels in a non-invasive way using these straightforward gadgets, which are inexpensively sold on the main street and included in many fitness wearables.

These gadgets received media attention throughout the pandemic because it was believed that a quick and simple smartwatch SpO2 accuracy test like this would aid in the early detection and tracking of Covid-19.

Take a Deep Breath with These Fantastic Blood Oxygen Tracker -Compatible Smartwatches

1. Garmin Forerunner 255

Exercise is one of the best ways to raise blood oxygen levels. The Garmin Forerunner 255 is the company’s best SpO2 watch, the most reasonably priced running watch suitable for cyclists and swimmers. It has an All-Day Pulse Ox that monitors your oxygen levels every 5 to 15 minutes. Additional features include a spot-check watch face and a sleep-only option.

2. Fitbit Versa 3

The Versa 3 is another example of how Fitbit has established itself as one of the most reputable brands in the world of fitness trackers. In addition to the excellent sleep tracking, you now have a built-in SpO2 smart watch sensor for tracking blood oxygen levels. Your battery life will be reduced if you install the Fitbit SpO2 app and watch face. Your most recent score will appear on the face, and your nightly averages will appear in the app. However, there isn’t a spot-check SpO2 option, and you need Premium to view your nightly SpO2 data going back more than a week.

3. Garmin Venu 2

The Garmin Venu 2 is the company’s finest compromise option if you enjoyed all of the features listed for the Forerunner 255 but prefer a more conventional smartwatch experience. It provides you with the top-notch Garmin stats and data you’re accustomed to but with a lovely AMOLED display for a more fashionable appearance than the company generally offers. Additionally, just like other Garmin trackers, you can choose to turn SpO2 tracking on the smartwatch oxygen saturation throughout the day or while you sleep. It can withstand the blood oxygen battery hit better than any Fitbit or less expensive Garmin device thanks to the 11-day battery life.

4. Apple Watch Series 8

The class-leading health monitoring of the Apple Watch Series 8 has undergone some substantial improvements from its predecessor.

By pressing your finger on the digital crown, you may quickly and efficiently take an ECG or monitor your blood oxygen levels. Otherwise, you can configure the Blood Oxygen app on your watch to send SpO2 readings while you’re dozing off or immobile. As an interesting side note, a Theater mode option dims the screen and turns off SpO2 readings to prevent distraction from the sensor’s flashing lights.


Modern smartwatches feature a pulse oximeter smartwatch for blood oxygen monitoring so frequently that you take it for granted that it will be present. Beyond the sensor’s actual physical location, however, how the Pulse Ox truly functions on your watch and how the software uses the data are as crucial.

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