1) With FLASH memory built in, 256M / 512M / 1G / 2G /4G optional. 2) Built-in FM wireless transmitter, transmitting range: 87.5MHz ~ 108.0MHz,total 206 frequencies optional. 3) 1.5" CSTN displays the NO. of songs,frequency and Volume; 4）Have removable storage function and a capacity of 4G, download documents in the WINDOWS resources manager and realize USB2.0 high-speed data transmission. 5）Adopt Actions audio decoder chip, support MP3, WMA, ASF, OGG and APE and have good acoustic fidelity. 6）Support a variety of sound effect modes and have unique SRS surround sound effect. 7) Draws power from the cigarette lighter in the car: DC12V/24V power. 8) Infrared remote controller.Can choose the music and frequency