I originally gave this product a 4 out of 5 star review (4 because I didn't like how the very tight clip putting indentations in my visor).  However after only about a month of use, the spring mechanism for the retractable mic got stuck in the deployed 'on' position and did not allow me to push the mic back into the unit to turn it off.  Very disappointed as I liked the design and sound quality of this product.  Fortunately as always, Amazon was very good in accepting my return for this defect.  I have since replaced it with the sleek new Jabra SP5050 speakerphone which in my opinion is a much better product than the BlueAnt from a design standpoint.