Best Smartwatches 2024

The best smartwatches with blood oxygen sensor: our top 3 (2026)

9 July 2026 1 min read
Discover our ranking of the 3 best smartwatches with blood oxygen sensor based on our tests.

Ranking

#1 🏆 Best choice
Smart Watch for Women, Answer/Make Call, Alexa Built-in 1.8" HD Fitness Watch with Heart Rate SpO2 Sleep Tracker, Ladies Smartwatch for iPhone Samsung Android, 120 Sport, 3ATM Waterproof Step Counter Pink

Tensky

Smart Watch for Women, Answer/Make Call, Alexa Built-in 1.8" HD Fitness Watch with Heart Rate SpO2 Sleep Tracker, Ladies Smartwatch for iPhone Samsung Android, 120 Sport, 3ATM Waterproof Step Counter Pink

🔥 Populaire
  • Comfortable, lightweight design that’s easy to wear all day and night
  • Good set of features for the price: calls, Alexa, heart rate, SpO2, sleep tracking, many sport modes
  • Battery life of around a week in real-world use with quick 2-hour charging
Overall, this Tensky smart watch for women is a practical budget option that does the basics well and throws in a surprising amount of extra features. The screen is bright and readable, the watch is comfortable enough to wear 24/7, and it handles steps, heart rate, sleep, and notifications reliably enough for everyday use. Bluetooth calling and Alexa are nice bonuses, even if they’re not perfect. Battery life around a week in real use is also a strong point, especially compared to more expensive watches that need daily charging.It’s not without flaws: the plastic build feels cheap if you’re used to metal watches, the app is functional but not polished, and the Bluetooth range is limited – if your phone is far away, notifications and Alexa become hit-and-miss. Health metrics are good for casual tracking, but not something I’d use for serious training or health decisions. The overall experience clearly sits in the budget segment, but in a way that still feels usable, not frustrating.I’d recommend this watch for people who want an affordable, light smartwatch mainly for steps, sleep, and notifications, and who don’t care about having a big brand logo on their wrist. It’s also suitable as a first smartwatch for teens or as a simple health-focused watch for parents who just want something easy. If you’re a runner who lives by precise GPS data, or if you’re picky about premium materials and super smooth apps, you’ll probably be happier paying more for an Apple Watch, Samsung, or Garmin. For everyone else on a tight budget, it’s a decent, no-nonsense choice.
8.3 /10
★★★★★ ★★★★★
🌟 Excellent See full review →
See offer Amazon
#2
ScanWatch – Hybrid Smart Watch with ECG, Heart Rate, Oximeter - 30 Day Battery Life - Smart Watches for Women, Smart Watch for Men, Fitness Tracker - Android & iOS,Black,42mm

Withings

ScanWatch – Hybrid Smart Watch with ECG, Heart Rate, Oximeter - 30 Day Battery Life - Smart Watches for Women, Smart Watch for Men, Fitness Tracker - Android & iOS,Black,42mm

🔥 Populaire
  • Battery life of 3–4 weeks in real use, so you rarely need to charge
  • Classic analog design with sapphire glass and steel case that looks like a normal watch
  • Useful health features: ECG, SpO2, continuous HR, and sleep breathing analysis that work reliably when used correctly
After living with the Withings ScanWatch, I see it as a health-focused analog watch with smart extras, not as a full-on smartwatch. The strong points are clear: long battery life measured in weeks, not days; ECG and SpO2 that are genuinely useful if you care about heart rhythm or sleep issues; and a design that looks like a normal watch rather than a tiny phone on your wrist. The build quality (steel case, sapphire glass, 50 m water resistance) also helps it feel like something you can wear for years, not just a disposable gadget.It’s not perfect, though. Step counting indoors can be a bit low, the charger is fussy, the screen is small and basic, and you don’t get the rich app ecosystem or training metrics that other brands offer. Sleep tracking is good enough for trends but not best-in-class. So if you want deep sport features, apps, or bright full-color displays, you’re better off with a Garmin, Apple Watch, or Samsung watch and just accept the weaker battery life.I’d recommend the ScanWatch to people who: like traditional watches, want solid health monitoring (especially ECG and sleep breathing info), and are sick of charging every day. It’s also good for those who want something discreet that fits in at work or with dress clothes. I’d say skip it if you’re a serious athlete who needs advanced metrics, or if you want a watch to control music, run apps, and replace parts of your phone. For my use—general health tracking with a watch that looks normal—it hits the right balance.
8.2 /10
★★★★★ ★★★★★
🌟 Excellent See full review →
See offer Amazon
#3 💰 Best price
Smart Watch for Women, 50 Days Battery Life Fitness Tracker, 24/7 Heart Rate/SpO2/Sleep Monitor, 70 Sports Modes, IP68 Waterproof Step & Calories Counter Watch for iOS Android Pink

Blackview

Smart Watch for Women, 50 Days Battery Life Fitness Tracker, 24/7 Heart Rate/SpO2/Sleep Monitor, 70 Sports Modes, IP68 Waterproof Step & Calories Counter Watch for iOS Android Pink

🔥 Populaire
  • Light and comfortable to wear all day and night, even on small wrists
  • Battery easily lasts around a week in normal use
  • Decent step and heart rate tracking for casual activity, plus handy notifications
After wearing the Blackview smartwatch daily, my takeaway is simple: it’s a decent budget fitness watch with clear limits. The hardware is light and comfortable, battery life is genuinely good, and for basic step counting, heart rate checks, and notifications, it does what it says. The pink version looks fine on the wrist and doesn’t feel bulky, which is nice if you have smaller wrists or just don’t like heavy watches.Where it falls short is mainly on the software side and the more “advanced” features. The GloryFit app is basic and a bit clunky, sleep tracking is unreliable especially if you have irregular hours or naps, and phone syncing isn’t as smooth as with bigger brands. It’s more for someone who wants a cheap way to be a bit more active and see calls/messages on their wrist than for someone who lives in their fitness stats.If you’re on a tight budget, want a simple tracker, and don’t care too much about perfect accuracy or fancy graphs, this watch is good value for money. If you’re coming from a Fitbit, Garmin, or Apple Watch and you’re picky about data quality and app design, you’ll probably find it too basic and a bit frustrating. So: good for casual users and beginners, not ideal for data geeks or people who really rely on sleep tracking.
8.2 /10
★★★★★ ★★★★★
🌟 Excellent See full review →
See offer Amazon

Comparison table : Smartwatches with blood oxygen sensor

Overall score Value for money Design Battery Comfort Durability Performance Presentation
Smart Watch for Women, Answer/Make Call, Alexa Built-in 1.8" HD Fitness Watch with Heart Rate SpO2 Sleep Tracker, Ladies Smartwatch for iPhone Samsung Android, 120 Sport, 3ATM Waterproof Step Counter Pink
#1 Tensky
Smart Watch for Women, Answer/Make Call,...
See offer Amazon
8.3/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★
ScanWatch – Hybrid Smart Watch with ECG, Heart Rate, Oximeter - 30 Day Battery Life - Smart Watches for Women, Smart Watch for Men, Fitness Tracker - Android & iOS,Black,42mm
#2 Withings
ScanWatch – Hybrid Smart Watch with ECG,...
See offer Amazon
8.2/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★
Smart Watch for Women, 50 Days Battery Life Fitness Tracker, 24/7 Heart Rate/SpO2/Sleep Monitor, 70 Sports Modes, IP68 Waterproof Step & Calories Counter Watch for iOS Android Pink
#3 Blackview
Smart Watch for Women, 50 Days Battery L...
See offer Amazon
8.2/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ - ★★★★★ ★★★★★ ★★★★★ ★★★★★

Frequently asked questions

According to our tests, the best smartwatches with blood oxygen sensor is the Smart Watch for Women, Answer/Make Call, Alexa Built-in 1.8" HD Fitness Watch with Heart Rate SpO2 Sleep Tracker, Ladies Smartwatch for iPhone Samsung Android, 120 Sport, 3ATM Waterproof Step Counter Pink with a score of 8.3/10.

The cheapest smartwatches with blood oxygen sensor in our comparison is the Smart Watch for Women, 50 Days Battery Life Fitness Tracker, 24/7 Heart Rate/SpO2/Sleep Monitor, 70 Sports Modes, IP68 Waterproof Step & Calories Counter Watch for iOS Android Pink.

The most popular smartwatches with blood oxygen sensor is the Smart Watch for Women, Answer/Make Call, Alexa Built-in 1.8" HD Fitness Watch with Heart Rate SpO2 Sleep Tracker, Ladies Smartwatch for iPhone Samsung Android, 120 Sport, 3ATM Waterproof Step Counter Pink with 7 790 customer reviews.

To choose a smartwatches with blood oxygen sensor, we recommend comparing performance, build quality, value for money and user reviews. Our comparison table above helps you make the right choice.

We have tested 3 Smartwatches with blood oxygen sensor to establish this ranking.
#1 Smart Watch for Women, Answer/Make Call, Alexa Built-in 1.8" HD Fitness Watch with Heart Rate SpO2 Sleep Tracker, Ladies Smartwatch for iPhone Samsung Android, 120 Sport, 3ATM Waterproof Step Counter Pink
Tensky
Smart Watch for Women, Answer/Make Call, Alexa Built-in 1.8" HD Fitness Watch with Heart Rate SpO2 Sleep Tracker, Ladies Smartwatch for iPhone Samsung Android, 120 Sport, 3ATM Waterproof Step Counter Pink
8.3/10 Best choice
See offer Amazon