content: Bought this for my C550, as most people I call told me that the voice quality over the internal mic was garbled and echoey. Well, After much use of this mic, the verdict is, while louder, still not much clearer. Then, today I tried my computer mic with a 3.5mm to 2.5mm adapter and 3 people on the other end told me that it was a DRAMATIC improvement in sound. What does that tell me? This mic ain't that great. Yes, since you can place it closer to your mouth, it's louder, but it is still a very low quality microphone. The cheap PC mic had far superior clarity and produced much better results. So, this is going to the trash, and I am going to purchase an Olympus ME-52 Noise Cancelling Mic and try that. This mic just isn't very good