Heart rate tracking in earbuds has been attempted for over a decade, but the Powerbeats Pro 2 may have finally gotten it right with a better fit and sensors.

Beats just released its long-anticipated Powerbeats Pro 2. Here's how to measure your heart rate with these earbuds during a workout.

The Powerbeats Pro 2 ($250) was hardly a secret. Although Beats officially announced the new fitness-focused earbuds today, it has been teasing them since last September. And over the last few weeks,