Apple's CEO says the company isn't interested in settling a patent case with Masimo and argues that people should still buy Apple's newest smartwatches even without the sensor. Our team tests, rates, ...

A U.S. Customs ruling has allowed Apple to restore blood oxygen readings for U.S. Apple Watch buyers for whom the feature was disabled in early 2024. For these users, the redesigned approach works by ...

Apple has your health in mind when it comes to the Apple Watch, which is why it added a blood oxygen sensor starting with the Series 6. This technology can tell if you’re getting enough oxygen to your ...

Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. On a typical training ride in Spain ...

I had a test done at local auto-parts store that showed a code of PO138. They told me this indicates a problem with the oxygen sensor. I replaced the oxygen sensor and the light never went out. I ...

A San Diego news anchor has revealed how her 16-year-old son's potentially fatal high-altitude pulmonary edema was uncovered by her Apple Watch. Marcella Lee, anchor on San Diego's CBS 8 news channel, ...

The wearable's blood oxygen sensor allegedly fails to accurately register dark skin tones. A class-action lawsuit claims the Apple Watch's blood oxygen sensor is racially biased against people with ...

If you're planning to buy an Apple Watch Series 9 or Apple Watch Ultra 2, you may want to act quickly. Apple says it will soon halt sales of both devices in the US due to a International Trade ...

When it comes to metering in the fire service, there’s a culture of “I’m no hazmat technician. Meters are for hazmat geeks.” However, competency in basic metering is a skill that first responders must ...