This was a replacement for a Plantronics Voyager H570, which was a bit bulky, cumbersome to use, and an unshielded, oversensitive mic that picked up way too much ambient noise (wind, footsteps, etc.).When I first attached the Motorola H700 to my ear, the first thing I noticed was that I hardly noticed it at all. It's so light! In terms of sound quality, it's decent. Not quite as good at putting the actual phone up to your ear, but what is? The person at the other end of the phone reported being able to hear me much clearer, and not detecting any footsteps (mine) or wind noise. Subway commuters note: It does transfer train noise as they arrive and depart from the platforms; my conversation partner reported an earsplitting shriek as one pulled away.In terms of features, it can be used on either ear, has three buttons (somewhat customizable), and works with the voice dialing feature of Windows Mobile (and maybe others, I didn't test).Here's the laundry list:Pros:-Lightweight-Good reception with the device several feet away-Configurable-Good ambient noise reduction (non-vocal)-Can be worn on either ear-Good value for the priceCons:-Relatively short battery life (but a short charge time to compensate)-Noticeable drop in quality over 5 feet away, lack of line of sight-Pairing process a bit cumbersome, can sometimes be severed if the phone or its bluetooth receiver is switched off/disabled.Final word: Buy it. If you don't like it, go spend $100 for a Jawbone or something.