Unlike the Polar H10 (below), the battery compartment can’t be removed from the strap ... to your heart rate’s changes than the optical sensors found in watch and fitness tracker monitors.

[Wolf] had a Polar brand exercise watch that wirelessly monitored ... watch and built an Arduino-based heart rate monitor. He’s still using the chest strap and was happy to find that SparkFun ...

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

WORKS WITH EVERYTHING: Polar HRM works with many sports and smart watches (Polar ... Polar H10 is the most accurate heart rate sensor in Polar’s history. Polar H10 provides top quality heart ...

Thanks to the soft textile material and simple but secure adjusting mechanism, the Polar Verity Sense armband fits around your arm snugly and comfortably. It’s easy and convenient to put on and ...

Whether you use an armband or chest strap, add some smarts to your exercise and training routine with one of the best heart ...

When exercising he wears a Polar heart rate monitor which sends data from a chest strap to his wristwatch. But his exercise bike also has a heart rate readout that depends on your hands touching ...

Widely regarded as the most accurate, commercially available heart rate monitor, this Polar chest strap is ... looking for an ...

I'm PCMag's managing editor for consumer electronics, overseeing an experienced team of analysts covering smart home, home entertainment, wearables, fitness and health tech, and various other ...

The Polar OH1 should be at the top of your list if you want an armband heart rate monitor rather than a chest strap. Scosche's ... Many Fitbit devices, the Apple Watch, and other wrist-based ...