Best Blood Oxygen Sensor Smart Watches of 2026

Mike Davis Avatar
Mike Davis
Last Updated: Jan 11, 2026

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Blood oxygen sensor smart watches are the latest trend in wearable technology. These watches are equipped with sensors that can measure the oxygen saturation level in the wearer's blood. This feature is particularly useful for athletes and people with respiratory issues. By monitoring their blood oxygen levels, wearers can keep track of their overall health and fitness levels. In addition to this, blood oxygen sensor smart watches also come with other features such as heart rate monitoring, sleep tracking, and activity tracking. These watches are available in a variety of styles and price ranges, making them accessible to a wide range of consumers.

At a Glance: Our Top Picks

Apple Watch Series 7 GPS 41mm Midnight Cover #TOP 1
Apple Watch Series 7 GPS 41mm Midnight
ftb score rating icon 9.9
KEEPONFIT Smart Watch with Fitness Tracker Cover #TOP 2
KEEPONFIT Smart Watch with Fitness Tracker
ftb score rating icon 9.8
Renewed Apple Watch Series 7: A Smart Watch with Impressive Features Cover #TOP 3
Renewed Apple Watch Series 7: A Smart Watch with Impressive Features
ftb score rating icon 9.6

Top 6 Blood Oxygen Sensor Smart Watches

#TOP 1

Apple Watch Series 7 GPS 41mm Midnight

Watch Series 7
Midnight
41mm
Apple Watch Series 7 GPS 41mm Midnight Cover
Apple Watch Series 7 (GPS, 41mm) Midnight Aluminum Case with Midnight Sport Band, Regular (Renewed)

The Apple Watch Series 7 offers a larger, always-on Retina display that makes it easier for you to see and interact with your apps and notifications without raising your wrist. It features the toughest front screen yet, designed to resist cracks, along with dust and water resistance, so you can wear it worry-free during everyday activities and workouts. With this watch, you can take an ECG anytime, helping you keep track of your heart health conveniently. It also notifies you of unusual heart rates and lets you measure your blood oxygen levels, giving you valuable insights about your wellness right on your wrist.

What We Like
Larger always-on display
Durable crack-resistant screen
ECG and heart notifications
Blood oxygen monitoring
Water and dust resistant

KEEPONFIT Smart Watch with Fitness Tracker

DR05 Pink
Pink
Medium
KEEPONFIT Smart Watch with Fitness Tracker Cover
KEEPONFIT Smart Watches for Women Android/iPhone, IP68 Waterproof Fitness Tracker with Bluetooth Calls(Answer&Make), Activity Pedometer/Heart Rate/SpO2 Monitor/100+ Sports Model

The KEEPONFIT Fitness Smartwatch is designed to keep you active and connected throughout the day. With over 100 sports modes, it tracks a wide range of activities like running, swimming, and yoga, helping you monitor your workouts accurately. Its IP68 waterproof rating means you can wear it during swimming or showering without worry. The watch continuously monitors your health by tracking heart rate, blood oxygen, sleep quality, and even women’s menstrual cycles, giving you useful insights to improve your lifestyle. You can also make and receive calls right from your wrist, stay updated with notifications, and control music with voice commands. The vibrant 1.27-inch touchscreen lets you personalize watch faces and access handy tools like alarms, timers, and stress monitoring.

What We Like
100+ sports modes
IP68 waterproof design
Health monitoring sensors
Bluetooth calling feature
Customizable watch faces
#TOP 3

Renewed Apple Watch Series 7: A Smart Watch with Impressive Features

Watch Series 7
Midnight
45mm
Renewed Apple Watch Series 7: A Smart Watch with Impressive Features Cover
Apple Watch Series 7 (GPS, 45mm) Midnight Aluminum Case with Midnight Sport Band (Renewed)

The renewed Apple Watch Series 7 is a smartwatch that offers impressive features. With an always-on Retina display that has nearly 20% more screen area than Series 6, this watch makes everything easier to see and use than ever before. It also has the most crack-resistant front crystal yet on an Apple Watch, IP6X dust resistance, and swimproof design. You can take an ECG anytime, anywhere, get high and low heart rate, and irregular heart rhythm notifications, and measure your blood oxygen with a powerful sensor and app. The watch tracks your daily activity, including new tai chi and pilates workouts, and syncs your favorite music, podcasts, and audiobooks. You can also pay instantly and securely from your wrist with Apple Pay.

What We Like
Always-on Retina display with nearly 20% more screen area than Series 6
The most crack-resistant front crystal yet on an Apple Watch, IP6X dust resistance, and swimproof design
Take an ECG anytime, anywhere, get high and low heart rate, and irregular heart rhythm notifications, and measure your blood oxygen with a powerful sensor and app
Track your daily activity, including new tai chi and pilates workouts, and sync your favorite music, podcasts, and audiobooks
Pay instantly and securely from your wrist with Apple Pay
#TOP 4

Apple Watch Series 6 GPS 44mm

A2292
Space Gray
44mm
Apple Watch Series 6 GPS 44mm Cover
Apple Watch Series 6 (GPS, 44mm) - Space Gray Aluminum Case with Black Sport Band (Renewed)

The Apple Watch Series 6 lets you stay connected by allowing you to take calls and reply to messages right from your wrist, so you don’t have to reach for your phone. It also features a new sensor that measures your blood oxygen levels, helping you keep an eye on your overall health. With the ECG app, you can easily check your heart rhythm anytime, offering peace of mind about your heart health. Plus, the always-on Retina display is much brighter when you're outside, making it easier to see the screen even in bright sunlight.

What We Like
Call and text from wrist
Blood oxygen monitoring
Heart rhythm tracking
Brighter outdoor display

AKUMAKA G62 Smart Watch for Women

Blush-Pink
Adjustable
AKUMAKA G62 Smart Watch for Women Cover
Smart Watches for Women (Android/iPhone), 1.83" HD Smart Watch with Calls/Messages/Notifications, Sleep/Heart Rate/SpO2/Blood Pressure Monitor, 110+ Sports Modes Fitness Tracker Watch, 1000mAh Battery

The AKUMAKA G62 Smartwatch offers a stylish blush pink design that fits well with any outfit, giving you a chic look for work or special occasions. You can stay connected effortlessly by making and receiving calls or messages right from your wrist, which means you don’t have to constantly check your phone. It also helps you keep track of your health with real-time monitoring of heart rate, blood oxygen, sleep quality, and blood pressure, so you can better understand your body. Plus, the watch supports many sports modes to help you stay active and meet your fitness goals.

What We Like
Accurate health tracking
Long battery life
Elegant, versatile design
Easy phone connectivity
Affordable price
#TOP 6

BYBUKCKR Smart Watch for Women

T45S
Pink
1.83"
BYBUKCKR Smart Watch for Women Cover
Smartwatch for Women - Call, Fitness Tracker, Heart Rate & Sleep Monitor, 1.69" Touch Screen, Waterproof - For Android & iPhone, Pink

The BYBUKCKR Smart Watch for Women is a stylish and practical fitness tracker that offers a range of features to help you stay connected and healthy. It has a 1.69" full touch color screen, IP67 waterproofing, and a heart rate monitor, sleep tracker, and 8-type sports tracking. It also supports call receiving/dialing and information reminders, social media notifications, and quick communication. The battery life is 7-12 days or 25 days standby when charged for 2 hours.

What We Like
Stylish and practical design
IP67 waterproofing
Heart rate monitor, sleep tracker, and 8-type sports tracking
Call receiving/dialing and information reminders
Long battery life
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Do any smart watches measure oxygen levels?

Yes, some smartwatches, like the Garmin Fenix 6X Pro Premium Watch, have built-in pulse oximeters that can measure your blood oxygen levels. These watches offer health features that monitor various metrics such as heart rate, sleep, stress, workout, and workload.

2. Are smart watch blood oxygen levels accurate?

Blood oxygen measurements taken from smartwatches worn on the wrist are generally less accurate compared to measurements taken from fingertip pulse oximeters. Wrist-based sensors use the less reliable method of measuring the reflection of light, while fingertip oximeters shine light through the entire finger for more accurate readings.

3. How accurate is Apple Watch 7 blood oxygen?

Based on a study, the correlation coefficient between the Apple Watch 7 and conventional pulse oximeters was 0.813 when the watch was tied around the wrist. However, the authors concluded that the Apple Watch is not yet up to the medical standard of conventional oximeters due to some unsuccessful or incorrect measurements.

4. How accurate is Fitbit for oxygen?

The data provided by Fitbit SpO2, which measures blood oxygen saturation levels, is intended to be a close estimation but may not be precisely accurate. Fitbit SpO2 should not be used or relied upon for any medical purposes.

5. How accurate is the Fitbit oxygen sensor?

Similar to Fitbit's SpO2 readings, the data provided by the Fitbit oxygen sensor is intended to be a close estimation of blood oxygen saturation levels. However, it may not be precisely accurate, and it is not recommended for medical purposes.

6. How accurate is Fitbit SpO2?

Fitbit SpO2 readings are inconsistent from day to day, with a success rate of reading at best around 50% of the time. It is not reliable for detecting low oxygen levels, and there are no accompanying symptoms that would typically be expected with low oxygen levels.

Editor's Notes

During our blood oxygen sensor smart watches research, we found 24 blood oxygen sensor smart watches products and shortlisted 6 quality products. We collected and analyzed 142,553 customer reviews through our big data system to write the blood oxygen sensor smart watches list. We found that most customers choose blood oxygen sensor smart watches with an average price of $86.88.

The blood oxygen sensor smart watches are available for purchase. We have researched hundreds of brands and picked the top brands of blood oxygen sensor smart watches, including Apple, KEEPONFIT, AKUMAKA, Choiknbo. The seller of top 1 product has received honest feedback from 66,815 consumers with an average rating of 4.8.

Written by
Mike Davis Avatar

Mike Davis is a professionally trained electrician with six years of working experience in the electronics industry. He has written an array of web and mobile-based articles for e-magazines and blogs. He loves trying out some novel and popular gadgets and his expertise is in the areas of electronics and computers which is built over many years of working and personal experiences.