That’s where pulse oximeters come in. These small devices measure your heart rate and SpO₂. They give you another way to understand how your body responds during exercise and recovery. Also, they may ...

Wrist pulse oximeters can look similar, making it hard to decide which one to buy. This in-depth guide covers everything you need to know to find your best fit.

One of the flagship additions to the AirPods Pro 3 was a built-in heart-rate sensor, which allows users to track more than 50 workout types. But how accurate is it?

The wearable technology landscape is witnessing a radical architectural purge. For the past decade, smartwatches and fitness trackers consistently relied on bright, power-hungry displays designed to ...

At the start of his presidency in 1861, Abraham Lincoln supported a constitutional amendment that would have kept the federal government from banning slavery in states where it already existed. In ...

The Russian Revolution aimed to dissolve the family. Neither true equality nor true freedom could be achieved, the Bolsheviks argued, until class bonds trumped all other loyalties—that is, until ...

Researchers reported "counterintuitive" findings about the benefits of bladder-sparing therapy compared with radical cystectomy in a prospective observational cohort study of patients with recurrent, ...

SpaceX has won a lucrative contract to provide the US military with a means of distributing space-based sensing and targeting data, forming the “backbone” of a rearchitected network after separate ...

The Apple Watch Ultra 4 is shaping up to be the biggest upgrade since the Ultra line launched in 2022. Expected to launch alongside the iPhone 18 Pro in September 2026, the Ultra 4 could boost Apple ...

Spencer Pratt unveiled a radical plan to combat the homelessness crisis in Los Angeles — saying that allowing addicts to leave shelters and head right back to drug-infested streets defeats the purpose ...

CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise. I had never seen a sensor like Aqara's new P100 before, but ...