In today’s health-conscious world, keeping a close eye on your cardiovascular well-being has never been more convenient. ECG smartwatches bring professional-grade heart rhythm monitoring directly to your wrist, providing valuable data and peace of mind. These advanced wearables go far beyond simple step counting, offering a comprehensive suite of health and fitness features designed for proactive individuals.
Choosing the right ECG smartwatch depends on your lifestyle, ecosystem preference, and specific health tracking needs. From long-lasting battery life to sophisticated stress management tools, the options are diverse. Our 2025 roundup highlights the top contenders that expertly blend medical-grade technology with everyday smartwatch functionality to help you make an informed decision for your health.
Our Recommended ECG Smartwatches
- SAMSUNG Galaxy Watch 3 (45mm, GPS, Bluetooth)
- Fitbit Sense Advanced Smartwatch for Heart Health
- Apple Watch Series 5 (GPS + Cellular, 44MM) Renewed
- Apple Watch Series 9 [GPS + Cellular 45mm] Renewed
- SAMSUNG Galaxy Watch 6 Classic 47mm Bluetooth (Renewed)
- Garmin Venu 3 Slate Stainless Steel Bezel Smart Watch
- Withings ScanWatch 2 – Hybrid Smart Watch
- Fitbit Sense 2 Advanced Health and Fitness Smartwatch
- Apple Watch Ultra 2
SAMSUNG Galaxy Watch 3 (45mm, GPS, Bluetooth)
The SAMSUNG Galaxy Watch 3 successfully merges classic timepiece aesthetics with modern health technology. Its military-grade durability and water resistance make it a reliable companion for both daily wear and intense workouts. With Bluetooth connectivity, you can make calls, send texts, and stream music directly from your wrist, offering greater freedom from your phone.
From a health perspective, its advanced monitoring capabilities are a significant advantage. The watch allows you to take an ECG reading and generate a PDF report that can be shared directly with your healthcare provider via the Samsung Health Monitor app. This feature provides a tangible link between your personal health tracking and professional medical care.
Fitbit Sense Advanced Smartwatch for Heart Health
The Fitbit Sense is a comprehensive health smartwatch designed for those who want a deep understanding of their physical and mental well-being. It includes an EDA Scan app that detects electrodermal activity, which can indicate your body’s response to stress. Furthermore, a built-in skin temperature sensor logs variations each night, adding another layer to your health profile.
For heart health, the Fitbit ECG app can assess for atrial fibrillation, a common heart rhythm irregularity. The results are easy to share with your doctor, facilitating informed discussions about your cardiovascular health. The watch also tracks your nightly blood oxygen levels, providing a well-rounded view of your vital signs during rest.
Apple Watch Series 5 (GPS + Cellular, 44MM) Renewed
This renewed Apple Watch Series 5 offers a cost-effective way to access the robust health and connectivity features of the Apple ecosystem. The always-on Retina display ensures your metrics and the time are always visible without raising your wrist. With built-in GPS and cellular connectivity, you can stay connected, make calls, and stream music even when your iPhone isn’t nearby.
It includes the essential heart health features that Apple is known for, including the ability to take an ECG right from your wrist. This generation solidified Apple’s position in the health-tech space, providing users with critical data on heart rhythm. It remains a powerful and capable smartwatch for monitoring fitness and overall wellness.
Apple Watch Series 9 [GPS + Cellular 45mm] Renewed
The renewed Apple Watch Series 9 represents the cutting edge of Apple’s wearable technology at a more accessible price point. Its new S9 chip powers a superbright display and enables a new double-tap gesture for interacting with the watch without touching the screen. This model also marks a step forward in sustainability, with specific configurations being carbon neutral.
As a health companion, it builds upon the strong foundation of its predecessors with advanced sensors and algorithms. The cellular connectivity allows for complete independence from your iPhone, ensuring you can always call for help or stay connected during workouts. It provides powerful insights into your daily activity, sleep, and heart health.
SAMSUNG Galaxy Watch 6 Classic 47mm Bluetooth (Renewed)
The renewed Galaxy Watch 6 Classic brings back the beloved physical rotating bezel, offering a tactile and intuitive way to navigate the interface. Its 47mm case provides a bold, classic look on the wrist, appealing to those who prefer a more traditional watch aesthetic combined with modern tech. It includes multiple band sizes to ensure a comfortable fit for a wide range of users.
Health monitoring is a core strength, with always-on heart rate tracking and personalized heart rate zones for more effective workouts. The advanced sleep coaching provides detailed analysis and suggestions for improving your sleep quality. This watch is designed to be a comprehensive fitness and wellness partner.
Garmin Venu 3 Slate Stainless Steel Bezel Smart Watch
The Garmin Venu 3 features a sleek slate stainless steel bezel and a vibrant 1.4-inch AMOLED touchscreen display, making it both stylish and highly functional. It includes a built-in speaker and microphone, allowing you to take calls directly from your wrist when connected to your smartphone. This integration adds a layer of convenience to your daily routine.
For fitness enthusiasts, the watch offers animated on-screen workouts that guide you through various exercises, ensuring proper form and technique. Its wrist-based heart rate monitoring is continuous and precise, supporting the advanced ECG app feature. Garmin’s focus on comprehensive health metrics makes it a strong contender for active individuals.
Withings ScanWatch 2 – Hybrid Smart Watch
The Withings ScanWatch 2 stands out with its timeless hybrid design, featuring analog hands and a subtle digital display. Crafted with a stainless steel case and scratch-resistant sapphire glass, it is built for both elegance and everyday durability. Its classic appearance makes it suitable for formal and casual settings alike.
Perhaps its most impressive feature is the remarkable 35-day battery life, which allows for uninterrupted health tracking without frequent charging. The health monitoring is medical-grade, offering a 30-second ECG and continuous heart rate tracking with AFib detection. This combination of long battery life and clinical-grade features is unique in the market.
Fitbit Sense 2 Advanced Health and Fitness Smartwatch
The Fitbit Sense 2 is engineered to be your ultimate partner for managing stress and improving overall health. It uses all-day stress detection with cEDA (electrodermal activity) and provides a daily Stress Management Score to help you understand your body’s signals. The included mindfulness content offers practical tools for managing moments of tension.
Its sleep tracking is highly detailed, offering a personalized Sleep Profile that gives you a long-term view of your sleep patterns and quality. For heart health, it includes an ECG app for atrial fibrillation assessment and irregular heart rhythm notifications. The comprehensive health metrics dashboard puts all your vital data in one place for easy review.
Apple Watch Ultra 2
The Apple Watch Ultra 2 is designed for extreme conditions and the most demanding users, from athletes to adventurers. It features a rugged titanium case and a bright, always-on Retina display that is easily readable in direct sunlight. Its extended battery life supports multi-day adventures and intensive training sessions.
It incorporates the most advanced health sensors Apple offers, including a powerful ECG app and blood oxygen monitoring. Precision dual-frequency GPS ensures accurate tracking of your location and workouts, no matter how remote. This watch is built to deliver critical health data and connectivity in any environment, providing confidence for those who push their limits.
Buying Guide: How to Pick the Best ECG Smartwatch for You in 2025
So, you are thinking about getting one of the 9 best ECG smartwatches to buy in 2025. That is a smart move for your health, but with so many options, it can feel a bit overwhelming. I have been testing these devices for a while, and I can tell you that the best choice really depends on your personal needs and the tech ecosystem you are already in.
First things first, let us talk about medical clearance. This is the big one. An ECG app on a watch is not a substitute for a medical-grade electrocardiogram machine in a doctor’s office. Think of it as a helpful tool for spotting potential irregularities, like atrial fibrillation (AFib), that you can then discuss with your doctor. Before you even start shopping, it is a good idea to have a chat with your physician about whether this kind of device is right for you. Also, check if the feature is officially cleared by regulatory bodies like the FDA in the US or has a CE mark in Europe for your region. Not all features are available everywhere.
Next up is ecosystem compatibility. This is a practical detail you cannot ignore. If you are an iPhone user, an Apple Watch will give you the smoothest, most feature-rich experience. The health data syncs seamlessly with the Apple Health app on your phone. For Android users, a Wear OS watch like a Samsung Galaxy Watch or a Google Pixel Watch is typically the better fit. Some brands have their own operating systems that work with both, but you might lose out on some deeper integrations. I always make sure to check this before getting my hopes up on a specific model.
Then, consider the other health and fitness features you want. An ECG is fantastic, but these watches are packed with other sensors. Do you want continuous blood oxygen (SpO2) monitoring, a skin temperature sensor for cycle tracking, or advanced sleep analysis? Are you a serious runner who needs detailed GPS mapping? Make a list of your top priorities. Battery life is another huge factor. Some watches need a charge every day, while others can last a week or more on a single charge. If you plan to wear it for sleep tracking, a longer battery life is a major convenience. Finally, do not forget about the design and comfort. You will be wearing this every day, so pick a style and strap material that you like and that feels good on your wrist. By weighing these factors, you will be well on your way to finding your perfect match from our list of the best ECG smartwatches to buy in 2025.
FAQ
How accurate are the ECG readings from a smartwatch?
The ECG apps on approved smartwatches are generally very good at what they are designed to do: recording a heart rhythm that can be used to identify atrial fibrillation (AFib). However, it is crucial to understand their limits. They are single-lead ECGs, meaning they get a reading from one point on your body (your wrist). A clinical ECG in a hospital uses 12 leads. So, while the watch is excellent for spotting AFib, it cannot detect other serious conditions like heart attacks. Always follow up with a healthcare professional for a formal diagnosis.
Do I need a prescription to get an ECG smartwatch?
No, you do not need a prescription to buy one of these watches. They are considered consumer wellness devices. However, the ECG feature itself is often classified as a medical device. Because of this, you usually have to go through a one-time setup process within the watch’s companion app on your phone to activate the ECG function. This process involves providing your age and acknowledging the device’s intended use and limitations.
Can these watches alert me to a heart problem in real-time?
This depends on the specific watch and its features. Most devices require you to be still and actively initiate an ECG reading when you feel symptoms. However, some of the more advanced models, like the Apple Watch and certain Samsung and Fitbit models, offer passive, background monitoring for a high or low heart rate and irregular heart rhythms. If an irregular rhythm is detected, it will send you a notification suggesting you take an ECG. It is a fantastic proactive feature, but remember, it is not a continuous, real-time medical monitor.
Are there any good ECG smartwatches for Android users that are not made by Samsung?
Absolutely. While Samsung’s Galaxy Watches are a top choice, the landscape has gotten much better. The Google Pixel Watch 2 is a fantastic option that integrates deeply with Android and has excellent health sensors. Many watches running the full version of Wear OS 4, like some from Fossil or Mobvoi, also include FDA-cleared ECG apps. Just be sure to double-check the specifications for the model you are looking at, as features can vary.
How often should I charge my ECG smartwatch?
Battery life is one of the biggest differentiators between models. It is a real trade-off. Some watches with bright, always-on displays and many features, like the Apple Watch, typically need to be charged every day. Others, particularly those from Garmin, Fitbit, or brands using simplified operating systems, can last several days to over a week on a single charge. If you want to use your watch for 24/7 wear, including sleep tracking, a longer battery life is a huge quality-of-life benefit. When reviewing the 9 best ECG smartwatches to buy in 2025, I always pay close attention to real-world battery performance.