Recently at Intel CES 2014, Intel has announced new smart ear buds containing sensors which monitor your heart rate! Associated to a companion app, you can set a target heart rate for your workouts, and automatically select appropriate music tracks (fast, slow…).
This new gadget should be launched during this year. I’ll keep an eye out to inform you about future pricing and availability on these Intel Smart Earbuds.
More details on them : Details on Intel Smart Earbuds