Add a USB audio input into your factory car stereo?? you can play music from USB drive or SD / Micro SD / SDHC / MMC card with card reader. Support muti folders playback?? and control music (track + / track -) from steering wheel and radio panel. Also support last position memory playback.</br>Extra gold plated 3.5mm AUX Input Jack enhance high digital sound quality?? compatible with all device that has a 3.5mm audio output?? such as Zune?? iPhone?? iPad?? iPod?? Android Mobile Phone?? MP3 player?? XM Satellite Radio?? Video Game Systems?? DVD player?? etc</br>Built-in high performance amplifier chip?? static free CD quality clear audio sound.</br>Plug & play. No Signal Interfere. Installed via OEM CD changer port?? integrated with the "NT NOTE: Not compatible with navigation radios or factory DVD radios.</br></br>Product Description</br></br><b>APPS2Car</b> USB AUX Adapter (WT-USB) is a great solution for the car to stream music from USB drive?? SD card?? SDHC?? MMC?? Micro SD card and all all device that has a 3.5mm audio output. Installed via OEM CD changer port?? deliver CD sound quality music to car stereo system and integrated with the car. <br> <br><b>SPECIFIC</b> <br>- Application of storage device: USB 2.0 / 3.0 with FAT16 or FAT32 format?? Max 32GB <br>- USB Support Music Format: WMA?? Mp3 (8Kbps-320Kbps) <br>- Support