I bought this unit after reading many positive reviews, and thus hoped for a positive experience. However, the most honest critiques come from my wife, and she said that I sounded muffled and "like I was talking in the bottom of a barrel". Unfortunately, I had to return the product. I've also tried Bluetooth from Motorola and received the same critique from my wife. I'm beginning to think that Bluetooth has a long way to go before it has the same quality as wired headsets. I don't like getting tangled up in wires, but I also want my callers to be able to understand me. The wait continues for a proper bluetooth device. (I own a Blackberry 8800 device, by the way.)