Which smart watch can work without a phone?
Examples include the Fitbit Versa series, Garmin Forerunner models, and non-cellular versions of the Apple Watch and Samsung Galaxy Watch. Advantages: 1. Battery Life: These watches generally have better battery life since they do not have to maintain a cellular connection. The ECG app uses sensors on your compatible smartwatch to record the electrical signals that control how your heart beats. This recording is known as an electrocardiogram, or ECG. The ECG app analyzes the recording to get your heart rate and detect signs of an irregular heart rhythm called AFib.While smart watches offer useful heart monitoring capabilities, they do have some limitations. Wearable devices are: not as accurate as standard 12-lead ecgs. Limited in how well they can detect certain heart conditions.