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Best Smartwatches 2024

Guide: the 3 best smartwatches with ECG (May 2026)

23 May 2026 1 min read
Discover our ranking of the 3 best smartwatches with ECG based on our tests.

Ranking

#1 🏆 Best choice
Garmin Venu 4, 41mm GPS smartwatch, AMOLED touchscreen, 24/7 advanced health & fitness, 80+ sports apps, flashlight, ECG app, sleep tracking, fitness coach, up to 10 days battery life, Bone Bone 41 mm

Garmin

Garmin Venu 4, 41mm GPS smartwatch, AMOLED touchscreen, 24/7 advanced health & fitness, 80+ sports apps, flashlight, ECG app, sleep tracking, fitness coach, up to 10 days battery life, Bone Bone 41 mm

⭐ Très bien noté
  • Comfortable and light 41mm size, easy to wear day and night
  • Battery life of around 6–8 days in real use with GPS and sleep tracking
  • Strong health and fitness features (sleep score, Body Battery, training readiness, Garmin Coach) without subscription
After a few weeks with the Garmin Venu 4 41mm, my feeling is pretty clear: it’s a very capable all-rounder for people who want serious health and fitness tracking without wearing a huge watch. The 41mm size is comfortable, the screen is bright, and the battery life is long enough that you don’t have to think about charging every day. GPS and heart rate are accurate enough for most runners and gym-goers, and the health features (sleep score, Body Battery, training readiness) actually help you adjust your routine instead of just throwing numbers at you.It’s not perfect. Data accuracy during very intense intervals isn’t on the same level as a chest strap, and hardcore endurance athletes will still be better served by a Forerunner or Fenix if they want super advanced metrics. The price is not cheap either, especially if you mainly want notifications and basic tracking. But if you’re looking for a compact, comfortable watch that you can wear 24/7, with solid sports tracking, proper health insights, and battery life that easily covers almost a week, the Venu 4 is a strong option. If you’re on a tight budget or only casually active, go for something simpler. If you want a balanced mix of smartwatch and fitness watch that just quietly does its job, this one fits the bill.
8.5 /10
★★★★★ ★★★★★
🌟 Excellent See full review →
See offer Amazon
#2 🔥 Most popular
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
ScanWatch Nova, Hybrid Smartwatch Heart Health for M&F - ECG, SPO2, Temperature Monitoring, Sleep Tracking, Respiratory Health, Cycle Tracking, 30 Days Battery Life, iOS & Android Blue Nova 39 mm

Withings

ScanWatch Nova, Hybrid Smartwatch Heart Health for M&F - ECG, SPO2, Temperature Monitoring, Sleep Tracking, Respiratory Health, Cycle Tracking, 30 Days Battery Life, iOS & Android Blue Nova 39 mm

🔥 Populaire
  • Looks like a real watch and not a gadget, good for office or dressy settings
  • Multi‑week battery life in real use (around 2 weeks with most features on)
  • Strong Withings app with clear health data and good ecosystem if you own other Withings devices
The Withings ScanWatch Nova is basically a nice-looking analog watch with a health tracker hidden inside. It does a lot of things decently: solid build, good app, multi-week battery, and proper health metrics for everyday people who want more than just steps. But it’s not perfect, and it’s definitely not for everyone. Notifications are basic and sometimes frustrating, ECG and SpO2 can be fussy, and the UI on that tiny screen gets old fast if you try to do too much from the wrist.If you’re the kind of person who wants a watch that looks normal in the office or at dinner, hates charging every day, and mainly cares about health tracking and long battery over fancy apps, this is a good fit. It’s even better if you already own other Withings products and like their app. On the other hand, if you want rich smartwatch features, smooth notifications, and deep workout tracking, you’ll be happier with an Apple Watch, Garmin, or similar. You’ll charge more often, but you’ll get a lot more interaction and convenience.So, I’d sum it up like this: good hybrid for health-focused users who value style and battery more than pure smart features. There’s better tech for the same money if you don’t care how your watch looks. There are cheaper trackers if you just want steps and sleep. The Nova sits in the middle: not cheap, not perfect, but a decent choice if its specific mix of looks and health tools lines up with what you actually want.
8.2 /10
★★★★★ ★★★★★
🌟 Excellent See full review →
See offer Amazon

Comparison table : Smartwatches with ECG

Overall score Value for money Design Battery Comfort Performance Presentation Durability
Garmin Venu 4, 41mm GPS smartwatch, AMOLED touchscreen, 24/7 advanced health & fitness, 80+ sports apps, flashlight, ECG app, sleep tracking, fitness coach, up to 10 days battery life, Bone Bone 41 mm
#1 Garmin
Garmin Venu 4, 41mm GPS smartwatch, AMOL...
See offer Amazon
8.5/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ -
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 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★
ScanWatch Nova, Hybrid Smartwatch Heart Health for M&F - ECG, SPO2, Temperature Monitoring, Sleep Tracking, Respiratory Health, Cycle Tracking, 30 Days Battery Life, iOS & Android Blue Nova 39 mm
#3 Withings
ScanWatch Nova, Hybrid Smartwatch Heart...
See offer Amazon
8.2/10 ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★ ★★★★★

Frequently asked questions

According to our tests, the best smartwatches with ECG is the Garmin Venu 4, 41mm GPS smartwatch, AMOLED touchscreen, 24/7 advanced health & fitness, 80+ sports apps, flashlight, ECG app, sleep tracking, fitness coach, up to 10 days battery life, Bone Bone 41 mm with a score of 8.5/10.

The cheapest smartwatches with ECG in our comparison is the 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.

The most popular smartwatches with ECG is the 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 with 4 417 customer reviews.

To choose a smartwatches with ECG, 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 ECG to establish this ranking.
#1 Garmin Venu 4, 41mm GPS smartwatch, AMOLED touchscreen, 24/7 advanced health & fitness, 80+ sports apps, flashlight, ECG app, sleep tracking, fitness coach, up to 10 days battery life, Bone Bone 41 mm Garmin Venu 4, 41mm GPS smartwatch, AMOLED touchscreen, 24/7 advanced health & fitness, 80+ sports apps, flashlight, ECG app, sleep tracking, fitness coach, up to 10 days battery life, Bone Bone 41 mm
8.5/10 Best choice
See offer Amazon