I bought this based on the reviews saying how comfortable it is. The first thing you have to do it get it on your ear, which I found clumsy and irritating. I couldn't just quickly attach it to my ear. It was a pain to get on. Then, once on, the little gel earpiece, which will fall off multiple times as you try to get the thing on your ear, has to face the proper direction. Ach, it is not pleasant. Once on, the sound is really good. However, contrary to everything I've read, it was NOT comfortable, and I had to remove it after a 30 minutes or so. I wear glasses and have average sized ears. And don't get me started on the buttons.I went out and bought a Motorola 850 and it's been working just peachy. Easy on, easy off, and the sound is fine. Some people may not be turning the volume on the earpiece up _on the phone_, and hence the 'not loud enough' complaints. It doesn't feel as snug as the Jabra, but it's much more comfortable.