This is my 4th BT headset, and so far the best I've had. It's a little unorthodox with the wired headpiece, but for me it works. I like to keep my headset in my pocket, and the smaller ones have me fishing in my pocket when my phone rings. I have a plantronics 640 which I like and is now my backup. I've allmost lost it several times because it is so small. The iTech clips to my pocket and chirps when my phone rings, allowing me to keep the ringer volumn low. I easily grab the wire to the earpiece, put the bud in my ear, and answer the call. Sound is very good, and battery life is exceptional. I'm ordering a second one as I'm worried it may be discontinued. It pairs perfectly with my Treo 650- so check itech's web site to make sure it works with your phone.