The company introduced the feature in 2020 as part of a push to beef up its health-tracking capabilities to compete with rival smartwatches.

Apple is updating the Blood Oxygen feature for select Apple Watch models, giving fitness-minded users more ways to track their health.

This is a positive development for Apple ahead of its annual September event, where it's expected to debut new iPhones and the Apple Watch Series 11, which will inevitably introduce more extensive he...