The heart-rate monitor is a first for any Apple-designed earbuds and the feature is based on technology that's already used in the Apple Watch.

The newly announced Powerbeats Pro 2 seem a bit different, though. Of course, these new buds do all the things you'd expect from a pair of $250 headphones: They have active noise cancelling and transparency mode—the latter of which pumps in sounds from the world around you so you can hear what's going on with your earbuds in.

Apple has launched the Beats Powerbeats Pro 2, making them the first Apple earbuds to feature built-in heart rate monitoring.