Thanks to the Apple Watch Heart Rate app, watch owners can keep track of their resting and active heart rates throughout the day. In some instances, users have become aware of heart problems and sought medical attention, all because of the heart rate sensors on their wrist. Apple has included a built-in function to warn those wearing an Apple Watch of an unusually high heart rate, however this function is switched off by default.
Big changes are in store later this year for the Apple Watch. KGI analyst Ming-Chi Kuo has delivered his latest note to investors regarding the future of Apple's wearable. Kuo predicts the Apple Watch Series 4 will debut in the third quarter of 2018 with significant design changes.
A report released by IDC shows increasing growth in the wearable devices market, with Apple taking the lead in 2017. IDC estimates that Apple sold eight million Apple Watch units during the last quarter of the year, catapulting the device to top selling status in the wearables segment.
The Apple Watch already features a built-in heart rate monitor, however Apple is poised to improve this technology with an on-board electrocardiogram (EKG or ECG). Such a sensor would provide more detailed information regarding the electrical activity of the wearer's heart, potentially warning of irregular heart rates.
When the Apple Watch displays a red lightning bolt, battery life is critically low. The watch has automatically entered Power Reserve mode, and the device can only show the time.