Whenever I go to the gym, I immediately plug in my headphones. Last year, I graduated to wireless headphones, and while I'm happy with my current Bluetooth buds (more on those later), I was intrigued by Jabra's latest refresh of its Sports Coach series , which promises to gauge and coach not only...

TThe Bluetooth workout headphone field is as wide as it is colorful. It's one that Danish wireless headset maker Jabra has been involved with for some time now, with its simply named Sport line.