10 Best Ecg Smartwatch 2026 in the United States

The Apple Watch Ultra 2 is designed as a tough and feature-packed smartwatch, especially suited for active people who enjoy running, cycling, swimming, hiking, and diving. It includes ECG monitoring for heart health and can notify you about irregular heart rhythms, which is a key health benefit. The battery lasts up to 36 hours in normal use and can stretch to 72 hours in low power mode, which is solid for a smartwatch with many functions. Its 49mm titanium case and sapphire crystal screen make it very durable and water-resistant up to 100 meters, so you can confidently wear it while swimming or diving.

Fitness tracking is comprehensive, with detailed workout metrics, GPS accuracy, and compatibility with various cycling and swimming accessories. The large bright Retina display is easy to read outdoors, and the watch has a customizable action button for quick controls. It also offers extra health features like sleep tracking with potential sleep apnea notifications, emergency SOS calls, and a loud siren for safety.

A larger size and 15.2-ounce weight might feel bulky or less comfortable for people with smaller wrists or those looking for a lighter everyday watch. While it works best with Apple devices, which it pairs seamlessly with, this might limit usability if you have a non-Apple phone. Additionally, some advanced features, like the dive computer, require additional apps. If you want a rugged, reliable ECG smartwatch with extensive fitness and safety features and don't mind a bigger watch, the Apple Watch Ultra 2 is a strong choice. For those prioritizing a smaller, lighter design or non-Apple compatibility, it may not be the perfect fit.

The Garmin Forerunner 165 is a feature-packed running smartwatch that stands out with its built-in GPS, wrist-based heart rate monitoring, and vibrant AMOLED touchscreen display. Its lightweight design and traditional button controls make it user-friendly and practical for daily use. With a battery life of up to 11 days in smartwatch mode and 19 hours in GPS mode, it is reliable for long training sessions and extended use without frequent recharging.

The watch offers over 25 built-in activity profiles, including running, cycling, and HIIT, which is great for fitness enthusiasts looking for varied workout options. Personalized daily suggested workouts and detailed training metrics help users achieve their fitness goals effectively, while recovery insights ensure optimal performance without overtraining. Safety features like incident detection and Garmin Pay add convenience and peace of mind during workouts and everyday activities.

Compatibility with Android and Apple smartphones ensures broad usability, and the Garmin Connect app provides a robust ecosystem for tracking health and fitness data, competing with friends, and accessing challenges. The Forerunner 165 excels in many areas, making it a solid choice for runners and fitness enthusiasts looking for a comprehensive smartwatch.

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.