My experience told me that no matter how it is boasted to be well signal transmission, FM transmitter like this always delivers a litter noise in the back ground. As the range, far enough. Most of the case are i used it in car with car stereo.So basically, it satisfied me. Which i had expected some worse. The prices of this kinds of gadgets are downright cheap these days, check out

[Edited at March 07, 2008 02:59:18 AM.]

old school gadgets, can't imagine how they design such a sucker with bad USB interface. most mp3 FM transmitter now are quite simple style

A hard plastic shell with no soft insider will not protect but scratch iPhone and when it falls, the crush is passed directly to iPhone, bad design.

Spending dozens of dollar just for a protect case? yes, but most people have no choices. i have saw an multi-pouch iPhone case, which can fit your purse additionally, check out http://www.sourcingmap.com/iphone-cases-c-983_1389.html