I was looking for a universal radio transmitter, where so all MP3 player can be connected. First I bought the TuneCast III Belkin. This turned in slightly quieter song passages from unfortunately much too fast. A disappointment! Due to the previous reviews I have now the Technaxx FMT 100 ordered from Amazon. I am extremely happy with it. It works fine with my iPhone 3G (here there are apparently problems with transmitters of HAMA), which I have connected using the supplied jack cable. The handling is very simple. The transmitter in the "cigarette lighter" connected, once set the frequency (of course, the same on the car radio) and I get a very clear sound. I use the frequency 107.5. On my daily commute far from easy 60km I did not detect a noise / interfere with reception, since the signal of Technaxx is strong enough. (Frequency remains in Technaxx stored and does not need every time to be reset) With the sound I am very happy for a radio transmitter. The included remote control can be used only in conjunction with an inserted memory card. All in all I am very satisfied! And at half the price of the TuneCast.