A study finds that some headphones can interfere with heart devices if held very close to them. They might even prevent a defibrillator from delivering a lifesaving shock, say doctors who tested them.

Intel and rapper Curtis "50 Cent" Jackson are partnering on a new line of exercise headphones designed for the beats of music - and the beats of the heart. Jackson's consumer electronics company ...

The Powerbeats Pro 2 are a new set of headphones with a really interesting feature—Apple says they can measure your heart rate during workouts. Huge if true—imagine if you could leave your ...

Headphones can be made with built-in microphones, touch-sensitive buttons, motion sensors and even heart-rate monitors. But researchers have found a way to bring all these features to any existing ...