... Optional)• Support TF Card • Line-in function, work as extra speaker for other digital device, like PC, Mp3, Mp4 player, etc ... (MID), E-Books, Car DVRs (Car Blackbox), Bluetooth Car Kits, Car FM Transmitters, Mini MP3 Speakers, Digital Photo Frames, MP3/MP4 Players ... , please buy directly from our AliExpress Store (Store No.: 507803). Mini Sports MP3 Speaker with built-in FM, 8GB built-in flash memory