Yatour Digital Music Changer Usb+sd+aux Mp3 Music Interface for Becker Porsche /Fit Becker 2234, Becker 2235, Becker 2237, Becker CDR 22, Becker Cr 22,cascade Pro w/16GB USB Flash Drive _HUAHEE Yatour digital musci changer is a replacement of CD changer. It can be easily installed and used. Not change car original function . With Usb Sd Aux interface.Support play songs from SD/SDHC/MMC card, USB stick ,Aux device . Bluetooth adapter is optional . It can make travel more entertaining and increase. Come With 16GB USB Flash Drive(Gift)