The Apple Watch alone can't measure blood pressure. The only medically validated and accurate way to do this today is to stop blood flow by inflating a blood pressure cuff around the upper arm and then deflating it while watching for changes in the arteries. The Apple Watch can't measure blood pressure on its own. Blocking blood flow by first placing a blood pressure cuff on the forearm and then releasing it while monitoring for abnormalities in the arteries is the only method that is medically accurate and verified.
Samsung's Galaxy Watch 5 and Galaxy Watch 4 come equipped with a blood pressure monitor, although there are some caveats. Building on the success of previous models, the new watch offers comprehensive health and fitness features, such as continuous heart rate tracking, advanced sleep tracking, blood oxygen monitoring and ECG.
