I had bought a new Razr last fall, and it had a speakerphone function, but didn't come with a corded hands-free headset, which I had been used to using on my previous Nokia phones. I decided to jump in on the bluetooth wagon and this model had gotten good reviews, and was (and still is) on a great sale here on amazon.I bought this in May. I've used it off and on, but keep finding myself going back to just using the speakerphone to be hands free.The fit is just not good for my ear. I'd say you should "try it on" before buying, but of course you can't. If you know someone who has one, maybe ask to borrow it. As other reviewers have mentioned, it just isn't a tight fit - it's not uncomfortable that way, but I would find that turning my head sharply to talk to my kids in the back seat would send it flying.It was super easy to connect to the Razr phone, but some people would mention that they had a hard time hearing me when I used it. I could always hear the other person.As it happens, my mother thought she had found this model of mine - I had to travel to her house within the last few weeks and hadn't seen it since - however, when I got it in the mail, it turns out to be an H700 model instead. We've asked all over, but can't find the owner, so I'm using it for now.It fits my ear much better and has the same or better sound quality and features (I think maybe it's just not the newest connection speed, but neither are most phones.) Personally, I would recommend it over this HS850.This wasn't bad, and certainly was a good price, but it didn't "wow" me. Not being an experienced bluetooth owner, maybe nothing would, but I can't give it more stars.