If you want the most accurate heart-rate tracking, a watch isn't enough—you'll need to pair it with a chest strap.

Not yet sold on smartwatches for exercise tracking? Use this monitor instead (and get it for 20% off right now).

The previous-generation Apple Watch Ultra 3 packs plenty of fitness features that make it an excellent choice for anyone who ...

I wanted to see the heart rate measured by my Apple Watch in real-time on the large screen of my iPhone. The app I started building with that thought in mind has grown to the point where it can now ...

The design and battery life aren’t particularly impressive, but we were won over by the vital signs monitoring and the ...

I wore both in the gym to compare ...

I have been using a running watch in combination with an upper-arm heart rate monitor, and there is something that has always ...

Up to 28% off Pixel Watch 4 on sale at Amazon Google's previous-gen flagship smartwatch at great prices View Deal ...

The Apple Watch SE 3 is currently $30 off on Amazon during the final hours of October Prime Day. Even without the discount, ...

A Clinical and Technological Examination of Photoplethysmography (PPG), Single-Lead ECG Capabilities, Diagnostic Limitations, ...

The Garmin Fenix 9 Pro and Apple Watch Ultra 4 are two of the best (and most expensive) smartwatches to come out this year. But just how accurate are they? Much has been made of Apple's redesigned ...

Better battery, faster GPS, and smarter health tools make this a big Apple upgrade.