I was excited to see that Jabra had come out with a hads-free device that used a boom microphone, but was disapointed almost instantly. The range of adjustments it provides is encouraging, but I could never get it to fit just right. It was never tight enough on the ear, to keep out the road noise and annoying in the way it kept the mic resting against my cheek, adding noise to the conversation. When I would adjust it one way it would throw it out of adjustment another way, because of the design Get the Jabra hands free adapter that is entirely in the ear, you won't be sorry.