10 Best Ecg Smartwatch 2025 in the United States

The Garmin Venu 3S is a solid choice in the ECG smartwatch category, especially for users who want a smartwatch that combines health monitoring with everyday convenience. Its 1.2-inch AMOLED touchscreen offers a bright and clear display, making it easy to check your stats and notifications. The battery life is impressive, lasting up to 10 days in smartwatch mode, which means less frequent charging. Fitness tracking is comprehensive, with over 30 built-in sports apps including running, cycling, swimming, and HIIT, plus built-in GPS for accurate activity tracking.

Health features go beyond basic tracking, offering Body Battery energy monitoring to help you understand your energy levels, personalized sleep coaching, and detailed sleep metrics including heart rate variability. Water resistance is implied since swimming tracking is included, meaning it can handle sweat and some water exposure. The watch is compatible with smartphones via Bluetooth and Wi-Fi, allowing for calls and voice assistant use directly from your wrist, which adds a lot of convenience. Weighing only 1.4 ounces with a comfortable silicone band, it should be easy to wear all day.

The operating system is GarminOS, which has fewer third-party apps than some competitors but is well-optimized for fitness and health tracking. The Garmin Venu 3S suits anyone looking for a stylish, reliable smartwatch with strong fitness and health features, great battery life, and bright AMOLED display.

The Fitbit Sense 2 is a solid choice if you want a smartwatch focused on health and fitness with advanced features. It offers ECG monitoring to help detect irregular heart rhythms, plus continuous heart rate tracking and SpO2 measurement for oxygen levels, which are helpful for keeping an eye on your heart and overall wellness. Stress and sleep management tools are a highlight, including daily stress scores, mindfulness exercises, and detailed sleep tracking with personalized insights to improve rest.

The built-in GPS is great for outdoor workouts, and with over 40 exercise modes, it covers a lot of activity types. It’s water resistant up to 50 meters, so you can wear it while swimming or in the rain without worry. The design is sleek and comfortable for all-day wear, with interchangeable bands in two sizes included. Notifications and Bluetooth calls on the wrist add convenience, and features like Fitbit Pay and voice assistant support make the watch versatile. The color display is clear and easy to read, plus the battery lasts more than six days, so you don’t need to charge it frequently.

Some features like Google Maps are limited to Android users for now, and the device works best paired with a smartphone to unlock full potential. Also, while the watch includes a free 6-month Fitbit Premium trial, continued access requires subscription. If you want a stylish, health-focused smartwatch that balances fitness tracking with smart features and good battery life, Fitbit Sense 2 is a strong option, especially for those interested in detailed heart and stress monitoring.

The Garmin Forerunner 265 is a solid choice if you're looking for a smartwatch that offers a rich set of fitness and health features, including ECG monitoring. Its bright and colorful 1.3-inch AMOLED touchscreen makes it easy to read stats and navigate, while the additional physical buttons provide reliable control during workouts. This watch shines with impressive battery life, lasting up to 13 days in regular smartwatch use and about 20 hours when using GPS continuously, which is ideal for long training sessions or races.

It tracks your heart rate variability, sleep quality, and recovery, giving you personalized insights to help plan workouts and avoid overtraining. The watch also supports a wide variety of activities such as running, cycling, and swimming, and offers safety features like incident detection when paired with your smartphone. It's water-resistant and comfortable to wear thanks to its lightweight 46 mm size, making it suitable for daily wear and exercise. Additionally, it connects easily to both Android and Apple phones and supports smart notifications and Garmin Pay for contactless payments.

On the downside, the ECG and health data are approximations rather than medical-grade readings, so it should not replace professional health devices. The advanced GPS features improve location accuracy but can drain battery faster if used extensively. Also, some safety features require your phone to be nearby and connected. The Garmin Forerunner 265 is ideal for fitness enthusiasts who want detailed training feedback, good battery life, and seamless smartphone integration, but those seeking precise medical ECG monitoring might need a dedicated device.