Walmart has massively marked down a highly-rated pulse oximeter that's designed to monitor your heart rate and blood oxygen ...

From this data, a pulse rate can be derived, and the LEDs flashed with a heart graphic in concert with the rhythm of the wearer’s heart. The benefit of the PPG in the EmotiBit is that it can be ...

But we’ve taken the pulse of other top options. Share on Pinterest You might love the motivating tempo for workouts or the cadent call for calm that a smartwatch heart rate monitor provides.