I purchased this to use with my Razr V3. Initial setup was easy. Headset fits comfortably even after couple of hours. Easy to fit on my ear(s). Good that I can use on both left & right side. Good battery life. Buttons are easy to operate. These are all the goods.I only give it 3 stars because of the sound quality. I can hear the incoming calls very clearly. But the other end they cannot hear the outgoing voice clearly; only acceptable when I'm in a quiet environment & poorly when I'm in a noisy environment. I guess it has to do with the microphone being so far from the mouth. To compensate the microphone is actually very sensitive but it also picks up a lot of surrounding noise.I use this mainly for driving. On highways with stereo off & windshields up the other person can barely make out what I said; only acceptable when the car is slow or stopped. My previous Sony Ericsson HBH-35 had much clearer outgoing sound quality.