1. Exclusive modulated speaker, thin and power ; 2. High quality FM receptor chip, stereo effect with 40cm longth antenna for best work; 3. Work with Micro SD card and USB disk, with Up-Voltage circuit for best work; 4. Use 4 key operation, easy and quickly operate, we do the closed combine of key and body for less resonance; 5. With the memory chip can remember the last music song you enjoy last time 6. with earphone port, you can enjoy the music in card of USB youself; 7. Inside LED display can know the operation; 8. Power with the charge cable or BL4C battery, you can change easy; 9. With thick book cover to protect the body audio and reflect your style; 10. This audio so thin enough for put in pocket.