Freely download any music from internet or your computer Take advantage of car radio by frequency-modulation tuner connection; the built-in encoding and uncoding chip and software switches the digital misic signs into radio FM signs and received by the car radio Effective area covers 30m around. With the following advantage specifics: 1.Limitless times to download, record or replace music with the built-in memory in anytime for choice;Mass capacity up to 128M/256M/512M/1G 2.Take advantage of car radio, no need to change or update your car video/audio system at all; power supplied by car cigarette lighter and plug-in ?Cand-out usage; without any harmful radiation to user. 3.Built-in integrated A Flash memory chip, can be used as USB moveable memory and regular portable MP3 by earphone 4.Superior quiver and shake proof to completely solve any machinery mul-function 5.Hi-Fi perfect sound effect launched for fully enjoying 6.Mutil-format support: MP3 and WMA compatible 7.Small size, light weight,cool design, portable in anywhere for music enjoying 8.Customerized design of style/shape available 9.Superior by fully integrated in one unit and Cheaper than any other similar products.