I bought it as a replacement for another one!!! First of all, you constantly have to adjust the volume of the speaker. Then, when you make a call, it beeps once or twice to indicate that you're calling and then it becomes muffled until someone picks it up!!!! The worst part is when you get out of the car and it takes more than 5 minutes to deactivate and then you have to struggle to open it again to connect and adjust the speaker!!! And as for the sound quality; it's mediocre. The only positive thing, I think, is its price in the end!!!