EC21 Product Catalogs - cbm usb flash disk http://www.ec21.com/ec-market/cbm usb flash disk.html Car MP3 Playerhttp://feiying914.en.ec21.com/Car_MP3_Player--1677440_2424015.htmlUSB flash disk or in the SD/MMC card and transfers the audio signal to the car FM tuner through the built-in FM transmi20090719