Pretty much every fitness tracker and smartwatch has an optical heart rate sensor, but they're not always perfectly accurate.

It’s important to note that watch-style heart rate monitors aren’t medical devices and may not always be accurate ... Applekamp was new to owning a smartwatch after trying the Fitbit 4.

Choosing the best heart rate monitors isn’t just ... Heart rate accuracy has always been a strong point of Google’s smartwatch series, and the Pixel Watch 3 promises improved algorithms ...

Widely regarded as the most accurate, commercially available ... strap that delivers precision data on your heart rate straight to your phone or smartwatch. Rather than optical sensors (like ...

We tested all the best waterproof smartwatches from Apple, Samsung, Garmin, and more. Here's how to choose the right one for ...

Overall this model was very easy to use, somewhat accurate for ... Gen 6 Bradshaw is a smartwatch compatible with iOS and Android and includes real-time heart rate monitor, steps, sleep and ...

It also monitors steps, calories, heart rate and sleep for way less than an Apple Watch or other popular wearables.

A hybrid smartwatch could be the answer if you ... The ScanWatch 2 is a good health tracker, featuring largely accurate heart rate and decent (if not class-leading) sleep tracking.