Excellent, lightweight, great fit – Can't fault much on this unit, except that sometimes it is a bit hard to pair with my phone, although I suspect it could be a phone / user issue rather than the headphones.

They are light, compact, and so comfortable to wear. I have small ears and can never wear in-ear earphones, but these jaybird ones are very snug and never fall out. Very comfortable to wear, great battery life, and very handy with the box that it comes in.

Expensive, but great investment for runners like me who want wireless earphones on the run.

Never tried out the mic but accidentally used it once and the other party didn't seem to be able to hear me clearly.