Certian models of the Apple Watch include a feature called an electrocardiogram (ECG) which allow you to monitor your heart rhythm and detect irregularities. It’s a convenient way to keep track of your heart health because the ECG is right on your wrist. The ECG on the Apple Watch works like a single-lead reading, which can give you valuable information about your heart health, such as detecting signs of atrial fibrillation, a serious form of irregular heart rhythm. While it’s not as comprehensive as the ECG used in medical facilities, which looks at the heart from many angles, it’s still a useful tool for keeping an eye on your heart health.
Apple Watch Models with Built-in Electrocardiograms (ECG)
The Apple Watch has revolutionized personal health monitoring, and one of its most impressive features is the ability to take an electrocardiogram (ECG or EKG). Let’s explore which Apple Watch models offer this life-saving functionality.
Apple Watch Models with ECG Capability
Note:While the Apple Watch SE models do not have the ECG app, they still offer heart rate monitoring and other valuable health features.
How Does the Apple Watch ECG Work?
The Apple Watch uses a combination of electrical and optical heart sensors to detect your heart’s rhythm. It measures the electrical signals across your wrist, generating an ECG waveform similar to a single-lead electrocardiogram.
The Importance of ECG on Your Wrist
An ECG can detect irregular heart rhythms, such as atrial fibrillation (AFib), which can increase the risk of stroke. With the Apple Watch ECG, you can monitor your heart health conveniently and share results with your doctor.
Additional Notes
Staying Heart-Healthy with Your Apple Watch
Remember, the Apple Watch ECG is a valuable tool for heart health monitoring. Combining this with a healthy lifestyle can go a long way in protecting your heart.
Key Takeaways
Features that Can Save Your Life
Apple Watches have a range of impressive health features. One of the most important is the ECG (electrocardiogram) functionality. An ECG measures your heart’s electrical activity. It can help doctors find potentially serious heart conditions.
What is an ECG?
An ECG checks your heart rhythm and electrical activity. The sensors in an ECG can spot different conditions, including:
Which Apple Watches have ECG functionality?
Apple included the ECG feature starting with the Apple Watch Series 4. All Apple Watches made since have this function. Here’s a handy table:
How to take an ECG on your Apple Watch
Here’s how to take an ECG using an Apple Watch with the feature:
Important:The Apple Watch ECG app is a great tool, but it’s not the same as getting an ECG at a doctor’s office. Talk to your doctor if the app reports anything unusual or if you have any concerns about your heart.

Smart Watches & Devices That Support ECG
Understanding ECG and Its Importance in Wearables
Electrocardiogram technology in wearables allows users to monitor their heart health. The addition of this feature enhances the capability of devices like the Apple Watch to detect potential heart issues.
What Is an ECG?
An electrocardiogram (ECG) is a test that records the electrical activity of the heart. It shows how the heart beats and can detect irregular rhythms. The ECG feature in wearables, such as the Apple Watch Series 4 and later models, offers users the opportunity to monitor their heart health promptly.
The Science Behind ECG Technology
ECG technology in wearables operates by analyzing the heart’s electrical signals. These signals are important for diagnosing conditions like atrial fibrillation, which can increase the risk of stroke. The FDA has cleared ECG apps in wearables like the Apple Watch, meaning they meet the criteria for accuracy and safety.
Health Monitoring on Your Wrist
Wearables with ECG functionality make tracking heart health convenient. They provide irregular rhythm notifications and can help detect signs of atrial fibrillation. While these features do not replace professional medical devices, they serve as useful tools for users to monitor heart health in real-time. The ECG app on the Apple Watch, for example, produces an ECG similar to a single-lead ECG.
Apple Watch Models with ECG Functionality
Apple Watch introduced ECG functionality starting with the Series 4 model. This feature allows users to monitor their heart health more closely.
Apple Watch Series 4 and Beyond
Apple introduced the ECG app with theSeries 4. This feature has been a part of all subsequent models. The ECG app works with a sensor on the back of the watch and theDigital Crown. To use it, you start the app and then hold your finger on the crown for 30 seconds.
Navigating the Health Features Across Different Models
FromSeries 4onwards, all Apple Watches support the ECG app. They integrate with the Health app on your iPhone to review your heart rate data. Data accuracy in these readings is critical for reliable health monitoring.
Comparison of ECG Capabilities
The ECG feature can detect signs of atrial fibrillation, a serious form of irregular heart rhythm. It’s important to consult a qualified healthcare professional for advice and analysis of ECG readings. The watch alerts users to high or low heart rates and irregular rhythms that may need medical attention. This feature is not a replacement for regular medical care.
Frequently Asked Questions
This section answers common queries about the ECG feature in Apple Watches, explaining how to use it, its accuracy, and the available models with this functionality.
How do I use the ECG functionality on my Apple Watch?
To use the ECG app, open it on your Apple Watch Series 4 or later. Rest your arm on a flat surface, touch the Digital Crown, and wait for the recording to complete.
Can the Apple Watch detect atrial fibrillation with its ECG feature?
Yes, the Apple Watch ECG app can detect signs of atrial fibrillation, a type of irregular heart rhythm.
What is the accuracy of the ECG app in Apple Watches?
The ECG app is designed to be similar to a single-lead ECG and can provide valuable data about heart rhythms but is not as comprehensive as a standard 12-lead ECG performed by a medical professional.
Which models of the Apple Watch come with an ECG monitor?
ECG monitoring started with the Apple Watch Series 4 and continues in Series 5, 6, 7, and later models, including the Apple Watch Ultra.
Do newer models of the Apple Watch improve ECG features over previous versions?
Newer Apple Watch models maintain ECG functionality and may include incremental improvements, though the core feature works similarly across recent models.
Is the ECG feature available on the Apple Watch SE?
No, the ECG feature is not available on the Apple Watch SE. It is only included in the Series 4 and later mainline models.


