While wearing an Apple Watch, you may notice that it suddenly glows green. It’s caused by the optical heart sensor, which ...

We gave this model a four-star rating and loved everything about it, from the gorgeous design to its fantastic performance for tracking sports and workouts. In our review, we note the Ultra 2 did a ...

The Apple Watch Series 9 adds Pink to the list of available colors, while the Series 7 offers discontinued Green and Blue models. The Apple Watch Series 9 features a temperature sensor not found ...

Green, red, and infrared LEDs shine light onto ... which is an indication of how much oxygen is present. The Apple Watch Ultra can measure blood oxygen between 70 and 100 percent.

If you’re simply looking to pick up an Apple Watch regardless of price, there are plenty of stores that sell not only the latest Apple Watch Series, but older variants of the Apple Watch that ...

The Apple Watch was first introduced in 2015 and quickly became the best-selling wearable device of the year, reportedly selling 4.2 million units in Q2 2015. When the company introduced the Apple ...

The Apple Watch started as a fitness tracker slightly more sophisticated than a Fitbit, and has steadily grown to become a nearly indispensable companion device for iPhone users. Apple's ...