As you know, the MP3 is very popular nowadays, but when you are driving
a car it's not workable to ware earphone(it will affect your driving),
and also the songs in a CD can not be updated frequently (CD cost high).

This is a product which can transfer MP3 frequency into the FM electric
wave. Thus you can listen to the MP3 via your FM radio and sound on the
car. You can also enjoy the MP3 songs with total effect of sound. Besides
all the people on the car can enjoy together. There is another advantage.
You can change the songs as you like. Just download the songs from internet
is Ok, so you have as many soogs as you want.