March 27, 2026
10 Best Smart Watches With Ecg Function of 2026
Last Updated - March 27, 2026
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Our Rankings
Withings
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WITHINGS ScanWatch 2 - Women's Men's Health Smartwatch, ECG, SpO2, Temperature, Sleep Tracking, Respiratory Health, Waterproof, 30-Day Battery, 30-Day Battery, Android & iOS
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Why We Love It
- TIMELESS DESIGN Hybrid smartwatch with analog hands and digital health tracking. Stainless steel case with sapphire glass for durability. Available in multiple sizes and finishes.
- 35 DAYS BATTERY LIFE Built for the long run with up to 35 days of continuous use on a single charge. Provides uninterrupted daily and nightly health tracking with extended power.
- HEALTH MONITORING 30s medical-grade ECG and continuous heart rate tracking with AFib detection via the Withings ECG App. Includes high and low heart rate notifications.
- SLEEP, WORKOUT & RECOVERY INSIGHTS rack sleep stages, breathing, and over 40 sports with VO max and heart rate zones. Get a Vitality Score and 1 month of Withings+ for personalized insights.
- COMPATIBILITY & PROPRIETARY OS Seamlessly connects to Android and iOS via the Withings App. Powered by our HealthSense OS with on-device machine learning for precise health metrics.
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Our Rankings
Samsung
SAMSUNG Galaxy Watch 4 Classic 42mm Smartwatch with ECG Monitor Tracker for Health, Fitness, Running, Sleep Cycles, GPS Fall Detection, Bluetooth, US Version, Black
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Main Highlights
- BODY COMPOSITION ANALYSIS: Galaxy Watch4 Classic is the first smartwatch to off body composition data right on your wrist, On your own schedule, now you can get readings on body fat, skeletal muscle, body water, basal metabolic rate, and Body Mass Index
- BETTER SLEEP STARTS HERE: Wake up feeling refreshed and recharged with advanced sleep tracking; When you go to bed, your Galaxy Watch4 Classic sleep tracker starts monitoring your sleep and SpO2 levels continuously
- BE SMART ABOUT YOUR HEART: Take care of your heart with accurate ECG monitoring and keep an eye on possible atrial fibrillation, a common form of irregular heart rhythm; Share personalized readings with your doctor using the Samsung Health Monitor app
- MAKE EVERY WORKOUT COUNT: Get the most out of every exercise session with advanced workout tracking that recognizes 6 popular activities, from running to rowing to swimming, automatically in just 3 minutes
- GO THE EXTRA MILE: Improve your runs with advanced running coaching technology; VO2 Max readings assess your oxygen levels to manage and track your heart and lung endurance
- GOOGLE ON YOUR WRIST: Tap into the power and convenience of select Google services and apps right from your wrist; Pay for coffee; Get directions, Use Bixby or Google Assistant for help on almost any topic; Stream your favorite tunes on YouTube
- EXTENSION OF YOUR PHONE: Galaxy Watch4 Classic works as an extension of your phone so you can do more while on the go; Talk, text, stream music and more just by tapping the watch on your wrist
- LUXURIOUS DESIGN: Show off your style with a luxurious and timeless watch design that's great for any occasion. Personalize your look even more with a range of stylish watch faces and bands
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Our Rankings
Samsung
Samsung Electronics Galaxy Watch 4 40mm Smartwatch with ECG Monitor Tracker for Health Fitness Running Sleep Cycles GPS Fall Detection Bluetooth US Version - (Black) (Renewed)
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Main Highlights
- BioActive Sensor Technology: Advanced sensor measures body composition, heart rate, and blood oxygen levels.
- AMOLED Display: Bright and responsive display provides clear visibility of apps, notifications, and fitness data.
- Wear OS Powered by Samsung: Access Google apps, Play Store, and seamless Android integration.
- Comprehensive Fitness Tracking: Tracks workouts, steps, calories, and multiple exercise modes.
- Sleep and Wellness Monitoring: Tracks sleep patterns and provides insights for improved rest and recovery.
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Our Rankings
Fitbit
Fitbit Sense 2 Advanced Health and Fitness Smartwatch with Tools to Manage Stress and Sleep, ECG App, SpO2, 24/7 Heart Rate and GPS, Shadow Grey/Graphite, One Size (S & L Bands Included)
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Main Highlights
- Learn to manage stress, sleep better and live healthier with Sense 2our most advanced health and fitness smartwatch.Human Interface Input: Touchscreen
- Manage stress and live healthier: all-day stress detection with cEDA and daily Stress Management Score, ECG app for atrial fibrillation assessment(1), irregular heart rhythm notifications(2), SpO2(3), health metrics dashboard(4), mindfulness content
- Measure and improve sleep quality: personalized Sleep Profile(5), daily sleep stages & Sleep Score, smart wake alarm and do not disturb mode
- Enhance activity: built-in GPS and workout intensity map, Daily Readiness Score(5), Active Zone Minutes, all-day activity tracking and 24/7 heart rate, 40+ exercise modes and automatic exercise tracking, water resistant to 50 meters
- Designed for all-day wear: on-wrist Bluetooth calls, texts and phone notifications(6), customizable clock faces, Fitbit Pay(7), Amazon Alexa built-in(8), Google Wallet & Maps (Google Maps on Android only, coming Spring 2023 to iOS), 6+ day battery(9)
- Sense 2 is sleek and slim with raised band attachments that make it more comfortable for all-day wear. Both small and large sizes included in box. Small: Fits wrist 5.1 - 7 inches in circumference. Large: Fits wrist 6.5 - 8.6 inches in circumference
- Includes a 6-month Premium membership complete with personalized insights, advanced analytics and more (New & returning Premium users only. Must activate trial within 60-days of device activation. Content and features may change)
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Our Rankings
Samsung
Samsung Galaxy Watch 4 40mm Bluetooth Smartwatch with ECG Heart Rate Monitor, Tracker for Health, Fitness, Running, Sleep Tracking, GPS Fall Detection, US Version, SM-R860NZDAXAA, Pink Gold
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Main Highlights
- BODY COMPOSITION ANALYSIS: Galaxy Watch4 is the first smartwatch to off body composition data right on your wrist, On your own schedule, now you can get readings on body fat, skeletal muscle, body water, basal metabolic rate, and Body Mass Index.Supported Application:Fitness Tracker,GPS,Sleep Monitor. Connectivity technology:Bluetooth. Wireless comm standard:Bluetooth
- BETTER SLEEP STARTS HERE: Wake up feeling refreshed and recharged with advanced sleep tracking; When you go to bed, your Galaxy Watch4 sleep tracker starts monitoring your sleep and SpO2 levels continuously
- BE SMART ABOUT YOUR HEART: Take care of your heart with accurate ECG monitoring and keep an eye on possible atrial fibrillation, a common form of irregular heart rhythm; Share personalized readings with your doctor using the Samsung Health Monitor app on your compatible Galaxy phone
- MAKE EVERY WORKOUT COUNT: Get the most out of every exercise session with advanced workout tracking that recognizes 6 popular activities, from running to rowing to swimming, automatically in just 3 minutes; Stay motivated by connecting to live coaching sessions via your smartphone or to dynamic Group Challenges with your friends
- GO THE EXTRA MILE: Improve your runs with advanced running coaching technology; VO2 Max readings assess your oxygen levels to manage and track your heart and lung endurance
- EXTENSION OF YOUR PHONE: Put the phone features you need right on your wrist and stay connected to calls, texts, notifications, and music streaming, all accessible with a simple tap
- GOOGLE ON YOUR WRIST: Tap into the power and convenience of select Google services and apps right from your wrist; Pay for coffee; Get directions to the park; Use Bixby or Google Assistant for help on almost any topic; Stream your favorite tunes on YouTube
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Our Rankings
Samsung
SAMSUNG Electronics Galaxy Watch 4 40mm Smartwatch with ECG Monitor Tracker for Health Fitness Running Sleep Cycles GPS Fall Detection Bluetooth US Version, Silver (Renewed)
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Main Highlights
- BioActive Sensor Technology: Advanced sensor measures body composition, heart rate, and blood oxygen levels.
- AMOLED Display: Bright and responsive display provides clear visibility of apps, notifications, and fitness data.
- Wear OS Powered by Samsung: Access Google apps, Play Store, and seamless Android integration.
- Comprehensive Fitness Tracking: Tracks workouts, steps, calories, and multiple exercise modes.
- Sleep and Wellness Monitoring: Tracks sleep patterns and provides insights for improved rest and recovery.
7
Our Rankings
Samsung
Samsung Galaxy Watch 4 Classic 42mm Smartwatch with ECG Monitor Tracker for Health Fitness Running Sleep Cycles GPS Fall Detection Bluetooth US Version, Black (Renewed)
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Main Highlights
- 1.2 "(30.5mm) w/ Rotating Bezel, Super AMOLED, 396 x 396 pixels (~330 ppi density), 16M Colors, CPU: Dual-Core 1.15GHz, 247mAh Battery, Android Wear OS, One UI Watch 3, Bluetooth, Wi-Fi
- The Galaxy Watch4 Classic uses red LEDs and infrared rays to calculate your SpO2 levels or the amount of oxygen in your blood.
- Glass front (Gorilla Glass DX+), MIL-STD-810G compliant, 50m water-resistant (IP68), Compatible with standard 20mm straps, ECG certified, Blood pressure monitor
- 5 ATM / IP68 The water and dust resistance rating, Military-grade durability, Larger screen but lighter and thinner for more comfort.
- Compatible with Android Phones Running Android 6.0 and Above. NOT compatible with iOS.
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Our Rankings
Samsung
Samsung Electronics Galaxy Watch 4 Classic 46mm Smartwatch with ECG Monitor Tracker for Health Fitness Running Sleep Cycles GPS Fall Detection Bluetooth US Version, Black (Renewed)
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Main Highlights
- Rotating Bezel Navigation: Physical rotating bezel allows precise and intuitive control of apps and menus.
- Premium Stainless Steel Design: Classic watch styling with durable materials for a more traditional look.
- BioActive Sensor Technology: Tracks body composition, heart rate, and blood oxygen levels.
- Wear OS Integration: Access Google services, apps, and notifications directly from the wrist.
- Advanced Fitness Tracking: Monitors workouts, activity levels, and daily movement.
9
Our Rankings
Nihemin
Military Smart Watch for Men with Call Function,Fitness Smartwatch for Android Phones and iPhone,Waterproof Fitness Tracker with Blood Oxygen/Heart Rate/Sleep/100+ Sport Modes, Watches for Men
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Main Highlights
- SEAMLESS CONNECTIVITY: The smart watch is compatible with both Android Phones and iPhones( iOS 13.0 and Android 9.0 and above) this Fitness Smart Watch allows you to make and answer calls directly through the smart watch, receive message notifications, and control music directly from your wrist, keeping you connected on the go.
- HEALTH MONITORING FEATURES: This Outdoor Waterproof smart watch includes essential health monitoring tools such as a Blood Oxygen Monitor, Heart Rate Monitor, and Sleep Monitor, Drink water renminder and sedentary reminder, ensuring you stay informed about your overall well-being.
- ADVANCED FITNESS TRACKING: The Military Smart Watch for Men offers comprehensive fitness tracking with over 100 sport modes, enabling you to monitor your workouts, steps, and calories burned efficiently, making it perfect for health-conscious individuals who want to track their well-being throughout the day.
- SMART FEATURES FOR EVERYDAY USE: The smart watch stays organized and in control with features like weather report, alarms, timers, stopwatch, music player control and remote camera access, making this watch an ideal companion for daily activities as well as workouts.
- CUSTOMIZED WATCH FACE: A perfect blend of cutting-edge technology and stylish design. Elevate your wrist game with our customizable watch faces, allowing you to express your individuality and match your personal style effortlessly.
- DURABLE AND WEATHERPROOF DESIGN: Designed for outdoor enthusiasts, this rugged smart watch is IP68 waterproof degree, making it perfect for various activities in any weather, ensuring that it withstands your toughest adventures.
- LONG LASTING BATTERY :Ultra-low power consumption, the smart watch has a built-in battery, which can support 30 days of standby, 7 days of general use with a 2-hour full charge, providing long-lasting power for long outdoor adventures or busy work. If you encounter any problems during use, please contact us through Amazon. Tip: If you keep using the watch to play music or make phone calls, the watch's usage hours will be greatly reduced.
10
Our Rankings
![Apple Watch Series 11 [GPS 42mm] Smartwatch with Rose Gold Aluminum Case with Light Blush Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant](/_next/image/?url=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F31J%2BF-pXaWL._SL500_.jpg&w=384&q=75)
Apple
Apple Watch Series 11 [GPS 42mm] Smartwatch with Rose Gold Aluminum Case with Light Blush Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant
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Main Highlights
- HYPERTENSION NOTIFICATIONS Apple Watch Series 11 can spot signs of chronic high blood pressure and notify you of possible hypertension.*
- KNOW YOUR SLEEP SCORE Sleep score provides an easy way to help track and understand the quality of your sleep, so you can make it more restorative.
- EVEN MORE HEALTH INSIGHTS Take an ECG anytime.* Get notifications for a high and low heart rate, an irregular rhythm,* and possible sleep apnea.* View overnight health metrics with the Vitals app* and take readings of your blood oxygen.*
- STUNNING DESIGN Thin and lightweight, Series 11 is comfortable to wear around the clock while exercising and even when youre sleeping, so it can help track your key metrics.
- A POWERFUL FITNESS PARTNER With advanced metrics for all your workouts, plus features like Pacer, Heart Rate Zones, training load, Workout Buddy powered by Apple Intelligence from your nearby iPhone,* and more. Series 11 also comes with three months of Apple Fitness+ free.*
- BIG BOOST IN BATTERY LIFE With up to 24 hours of normal use.* And fast charge for up to 8 hours of normal use in just 15 minutes.*
- BUILT TO LAST With a superdurable glass display thats 2x more scratch resistant than Series 10.* Series 11 also has a water resistance rating of 50m and is IP6X dust resistant.*
- SAFETY FEATURES Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts.* Check In can automatically notify a loved one when youve arrived at your destination.
- STAY CONNECTED Send a text, take a call, listen to music, use Siri, and get notifications. Series 11 (GPS) works with your iPhone or Wi-Fi to keep you connected.
- * LEGAL DISCLAIMERS This is a summary of the main product features. See below to learn more.