The Motorola H500 is a very well made and full featured headset. The sound quality is amazing, much better than most wired headsets. The sound is crisp and clear, with very little distortion. The unidirectional microphone is good at cutting out background noise. Most people think that I'm on a landline! The user guide looks more like a quick start guide, but IMHO it's well written. This would seem to be enough guidance for most people, I mean it's just a headset. It's also very tiny, feels great on the ear, and it's a perfect visual match to shiny silver phones, especially the Motorola RAZR. Also of note is the fact that this headset uses the new Moto mini USB charging port (like the one on the RAZR). So people with Motorola phones that use the old style charging port will have to carry 2 chargers when traveling. Other than that, it's a great headset and highly recommended.