Yatour Digital Music Changer USB Sd AUX for Mazda 2 3 5 6 Mx-5 Rx-8 MPV -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.