1. FM wireless transmission, change Mp3 audio signal FM signal and transmits wirelessly to the car speaker and play. Full-frequency radiation, frequency rang: 87.5---108.0MHz ,total 116 frequencies are optional, able to be used in every corner of the world 2. Support MP3,WMA music formats. 3. No need CD driver for system later than WINDOWS98. 4. Lyric shown synchronously. Support 12 languages (simplified Chinese, Taiwanese, English, Japanese, Korean,France, Italy, Germany). 5. Capacity : 64MB/128MB/256MB/512MB optional. 6. Support USB 2.0(FS) interface. Write maximum : 955K byte/s ; read maximum: 1033K byte/s. metal shell, smart and fashionable appearance ; Directly- ed USB jack. 7. OLED(128*64) colorful display. digital repeating function. 8. 7 EQ: normal, Rock& Roll, pop, classical, soft,jazz, etc. 9. Rechargeable Li-ion battery playing methods-normal, repeat one, folder, repeat folder, random, intro, etc.