Apple has officially rolled out the high blood pressure, also known as hypertension, detection feature for Apple Watch users in Malaysia. First introduced at Apple’s 2025 September launch event, the feature is available for Apple Watch Series 9 and later, as well as Apple Watch Ultra 2 and later. That said, the hypertension detection feature on the Apple Watch is estimated to help notify over 1 million people with undiagnosed hypertension worldwide within its first year of availability. The hypertension detection feature uses the optical heart sensor on the Apple Watch to analyse how your blood vessels respond to the beats of your heart. If you happen to get a notification, it’s recommended that you log your blood pressure for seven days using a third-party blood pressure cuff and later share your results with your provider.