One of the most helpful features on Apple Watches, blood oxygen tracking, remains MIA on watches sold after January. Here's ...

The Apple Watch has a few of these capabilities ... Studies have shown that wearable devices to detect oxygen, called pulse oximeters, are not as accurate in people with darker skin tones ...

There are a lot of aviation apps out there that allow you to access useful aviation and weather data from your wrist. Here we ...

GQ spoke with the Cupertino giant's vice president of health about what went into the potentially game-changing feature.