I recently puchased this device with a some "concern" due to the comments about the retractable microphone not staying in place. Well, I received the item promptly from Amazon and carefully removed it from the package. So far, so good! I examined the unit and it looked like a well built device, although it is a magnet for fingerprints! I carefully retracted the microphone and the unit came to life. I figured all was well......except when it came time to push the retractable microphone back in! No such luck! After about 30 or so attempts to get the microphone in, it just stuck out and the unit would not power down! Yikes! I figured well, perhaps it's a defective unit which I can easily exchange through Amazon. Despite the unit being "on" (with the inability to turn it off - due to the microphone sticking out), I decided to try it out in the car to make sure it performed OK. Well, that's when I decided to return the unit for a refund. People I spoke to complained of severe echo and noise problems. The only positive thing about this unit is the magnetic holder and the speaker volume (it's pretty loud). Despite the speaker volume, what's the sense in buying a unit which sounds horrible on the receiver's end of the call? In addition, I worry about the longevity of the poorly designed retractable microphone. It's just a matter of time before it stops working (as some other reviewers have noted).After going through the problems I noted above, I purchased a Jabra SP-5050 and a Motorola T505 for audition. I love the size of both units and the Motorola works very well with the built in FM transmitter. Plenty of volume! The Jabra is also a fantastic unit with its slim size and ease of use. In fact, I'm keeping both units (one for home and one for when I travel in rental cars). In closing, stay away from the BlueAnt and consider the Jabra and Motorola units. You really can't go wrong with either one!