7 Best Smartwatches with ECG in 2021 (FDA Approved)

One of the significant causes of death these days is a sudden heart attack. In the USA after every 40 seconds a person has a heart attack. For this reason, monitoring early signs of heart attack is essential so that it can be prevented. All you need is the best smartwatch with ECG to monitor your heart.

Smartwatches are evolving day by day. From fitness trackers to other sensors, these watches are helping people monitor their sleep, exercise, everyday life, and general health.

This technology is helping people keep a closer look at their heart health. These watches can even be used for identifying atrial fibrillation, which is one of the leading causes of stroke.

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7 Best Smartwatch with ECG

If you are planning to get the best smartwatch with ECG, then these are the ones you should look to:

  • Apple Watch Series 6
  • Fitbit Sense Advanced Smartwatch
  • Samsung Galaxy Watch Active 2
  • Samsung Galaxy Watch 3
  • Garmin Forerunner 235 GPS Sport Watch
  • Newest Garmin Vivoactive 4 GPS Smartwatch
  • SOREX EG4 Smartwatch

Apple Watch Series 6

smartwatch with ecg

Apple Watch Series 6 is one of the best smartwatches with ECG because it is FDA approved and counts the blood oxygen level. It can track irregular heart rate and atrial fibrillation. It is easy and simple to use.

The ECG recording steps are the same for Apple Watch Series 4, 5, and 6. All you have to do is to look for a quiet and calm place. Open the ECG app and touch the Apple watch crown for 30 seconds.

You will get a guide about reading and notification of whether the reading was abnormal or normal.

You can share the ECG details with your doctor to get professional advice. Apple Health smartwatch app will provide you with an EKG graph of heart rate.

The watch has a SpO2 feature along with an advanced that can monitor blood oxygen levels accurately. Apple Watch Series 6 also provides notifications for irregular heart rhythms.

Not only the blood oxygen feature and ECG, but it also serves as the complete package for fitness and health needs. It has a sleep monitor, fitness tracker, elevation tracker, voice assistant, and heart rate monitor.

Along with health tracking functions, it can also track outdoor and indoor activities. It can measure workouts such as walking, swimming, running, cycling and yoga. Apple Watch Series 6 is 20% faster than Series 5 and has a swim-proof design.

  • FDA Approved
  • Monitors blood oxygen level
  • LTE connectivity
  • Built-in music storage
  • Overpriced
  • Works only with Apple Health Smartwatch app

Fitbit Sense Advanced Smartwatch

best smartwatch with ecg app

Fitbit is a renowned company for fitness trackers and smartwatches. Fitbit Sense Advanced Smartwatch has full features of fitness and health with the ability to perform an ECG.

It also includes HRM and is perfect to wear anytime and anywhere.

For taking the electrocardiogram reading, wear your watch and place your finger on an aluminum case. Fitbit Sense will monitor unusual low and high heart rates. It gives notifications for irregular heart rhythms, and you can share these results with your doctor through the Fitbit ECG app. PPG sensors scan these abnormal rhythms.

However, the ECG app for Fitbit Sense operates only in selected countries. It does not work in UK, USA, Europe, New Zealand, Singapore, and Canada.

Apart from this, there are multiple features of this watch that you can enjoy. You can control your alarms, bedtime reminders, and smart home devices, and this all can be done by just speaking to it.

It has an EDA scan that can detect electrodermal activity. This will indicate the response of the body to stress. Fitbit Sense Advanced has built-in temperature sensors that can monitor your body temperature. In this way, you will have an idea of temperature variation.

  • PPG sensors
  • EDA scans for electrodermal activity
  • Notifications for irregular heart rate
  • Temperature sensors

Samsung Galaxy Watch Active 2

best smartwatch for heart patients

Samsung Galaxy Watch Active 2 is another option if you are looking for the best smartwatch with ECG functionality. This watch provides you with automatic detection of your heart rate so you can check if it is normal. It can detect abnormal variations in heart rate and quickly alerts you.

Taking the reading for ECG is simple with Samsung Galaxy Watch 2. You need to wear your watch and put the finger of the opposite hand on the case.

This watch conducts the ECG rate with the use of a heart rate sensor.

An important thing you need to remember while taking ECG reading is to stay as calm as possible. Resting your forearm over a flat surface is also essential. Do not shift for 30 seconds while taking ECG readings.

It comes with a built-in sleep tracker, which provides valuable information and ways to get better sleep at night. This watch has the functionality of monitoring stress levels and also helps you normalize with the integrated Calm app.

It can track physical activities, and health tracking features such as calorie tracking, ECG, sleep, and stress tracking. Samsung Galaxy Watch 2 is perfect for people with a thin wrist because of its light, sleek and thin design. It is ideal for wearing on any occasion.

  • Sleek and comfortable to wear
  • Notification support
  • Heart rate and health tracking
  • GPS and LTE connectivity
  • Overpriced
  • Do not work with devices released before 2019


Samsung Galaxy Watch 3

watch for heart patients

This watch can give you valuable insights into your health and fitness. You can keep a look at your physical activities. It is an FDA-approved smartwatch with ECG functionality. Moreover, it can serve as the best alternative to Apple Watch Series 6.

It is packed with an additional feature of monitoring blood pressure along with ECG. What makes it best is its multiple functions such as ECG, Blood oxygen level, heart rate monitoring, calorie tracking, and blood pressure monitoring.

One of the excellent features of this watch is fall detection. There are advanced sensors that can detect hard falls and immediately send a message to the emergency number of your location. It will automatically call Emergency service if the fall alarm is not deactivated in a few minutes.

With all these features, this watch is best for people with blood pressure issues. It is available in two versions, 41 and 45mm. This watch has all the elements that will keep you on the right path. It will detect your stress levels and provide you guidelines for calm breathing, and helps to relax.

The health monitor app of Samsung is licensed for South Korea, the US, and Europe, but soon it is coming to other countries such as UK, Germany, Italy, Spain, Switzerland, etc.

  • FDA Approved for ECG monitoring
  • Rotating bezel and premium design
  • Waterproof
  • LTE/4G connectivity
  • Slightly overpriced
  • ECG feature works only with Galaxy smartphones.

Garmin Forerunner 235 GPS Sport Watch

Garmin Forerunner 235 is a multi-sports GPS smartwatch that will keep track of your stats. It counts the number of crunches and everything that you need to know about your workout performance. This watch monitors your workout load and helps you see if you are overdoing it.

The watch keeps all information about running form, your performance, your goals, and training. Tracking the running dynamics will help you to be in your state. Another essential feature of this watch is the training plan by the Garmin coach, which is free.

It has assistance and incident detection features. Moreover, it has a high-resolution display that allows you to see read the dial under direct sunlight. Because of its thinner and lighter design, you will never feel stress on your wrist. 

It tracks your heart rate all day, smartphone notification feature, access to IQ app store of Garmin Connect, and music controls.

This watch acts more like your boss because it prepares you for your next workout. It can predict race timing and the recovery time and advisor. In this way, it gives you an idea about when to start your next training.

Another essential feature is the VO2 MAX. It is a metric usually used by athletes to measure the maximum oxygen amount during a workout. Additional running features include interval workout, auto lap, auto pause, and keeping personal tracking records.

  • Monitors heart rate
  • Smart notification
  • Tracker for different activities
  • GPS accuracy
  • VO2 MAX feature
  • Connection issues
  • No data organization
  • No music

Garmin Vivoactive 4 GPS Smartwatch

fda approved watches with ecg

This watch is best for checking your energy levels after all the physical activities during the day. It takes data by tracking your activity, sleep, stress, and heart rate variability (HRV).

The watch has built-in features which constantly keep a check on your heart rate.

Its notification feature alerts you when the heart rate is too high or too low when you rest. You can also receive notifications about texts, emails, and alerts when paired with a smartphone. Moreover, it helps you understand how hard you are working, either in the gym or underwater.

The Pulse Ox sensor in-app can track blood oxygen saturation and respiration level for monitoring the number of breaths in a minute. It has excellent built-in GPS features that will keep track of every move. The GPS feature also tracks running, walking, pool swimming, cycling, golf, etc.

This watch also helps you with more than 40 screen workouts for cardio, Pilates, yoga, and strength training. You can follow the animation and perform the technique and form as it demonstrates on watch. So no worries if you are missing your gym for few days.

  • Best for exercise tracking
  • GPS accuracy
  • Workout stats
  • Music streaming
  • Battery life
  • Expensive

SOREX SG5 Smartwatch

This smartwatch is health-focused because of its ECG and PPT features. These features help in detecting potential abnormalities in the heart.

PPT feature can perform a PPT test that shows abnormalities in heart rate variability or QT interval. It also shows variations in time between the heartbeats.

This test can help in explanation and diagnosis. It comes with a complete heart rate package that includes a smartwatch, 10 electrodes, and a watch base. This package helps perform PPT and ECG tests to check any abnormality, heart rate variability, and QT interval.

Another essential feature in this watch is SpO2, Blood pressure, and sleep monitoring sensor. It accurately measures blood oxygen levels along with blood pressure.

Moreover, it helps in tracking sleep patterns. All these features can help you keep a close look at your health and take action to stay healthy and active.

The 10 sport modes in SOREX SG5 helps in maintaining a healthy lifestyle as it shows dynamic data on the homepage such as calories, steps, temperature, and weather. You can also enjoy sleep goal setting, monitoring, music control, sedentary reminder, countdown, stopwatch, HRV data analysis, etc.

  • ECG and PPT features
  • Heart rate package
  • Battery life
  • SpO2 feature
  • No accurate sleep tracking
  • Connectivity issues

Things To Consider Before Buying An ECG Smartwatch

No matter which ECG smartwatch you will buy, you must consider these factors to buy the perfect one.


To get the perfect ECG smartwatch, first of all, you have to consider the accuracy of that smartwatch. If that watch gives accurate results of the ECG app, then you are ready to go for that watch.

SpO2 Feature

The best smartwatch with ECG is incomplete without the SpO2 feature. By using this feature, you can find out how well your heart pumps oxygen throughout your body.

People with conditions that affect blood oxygen levels may use it to monitor their health, especially if they are in the hospital.

FDA Approved

The next thing that you have to check in the watch that you are going to buy is whether it is FDA approved or not. If yes, then you can go for that watch.

An FDA-approved product means that the FDA has decided that the product’s benefits outweigh the known risks. The manufacturer must submit a pre-market approval application and results of clinical testing.

PPG  Sensor

For monitoring heart rate, photoplethysmography (PPG) is an uncomplicated and inexpensive optical measurement method. 

PPG measures the volumetric variations of blood circulation by using a light source and a photodetector at the skin’s surface.

The PPG sensor is the plus point for the best ECG smartwatches.

Temperature Sensor

Signals from this sensor are used to measure temperature. When it detects a temperature change, the sensor produces an electrical voltage or resistance.

If the watch contains this feature, it is the plus point for that watch, and you are pretty good to go for it.


There is no doubt that the number of deaths because of sudden heart attacks increases day by day. It is essential to keep track of your heart rate, and overall health is essential. Therefore we provided you with information about the popular choices for the best smartwatch with ECG.

Apple Watch Series 6 is the most popular smartwatch with ECG functionality. It can alert you immediately for any abnormality in your heart rate.

I hope we were able to guide you thoroughly and provide answers to your questions. I hope you had a great time reading this article, and it will be great if you choose a smartwatch from our list.

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