Portable SD/TF/USB/MMC Cards MP3 Player/Speaker HOT 1)ROHS,CE,FCC 2) ... TF card,USB Portable SD/TF/USB/MMC Cards MP3 Player/Speaker HOT1)ROHS,CE,FCC 2)With USB and ... Product technical parameters:1. Application: notebook computers, mobile phones, MP3, MP4, DVD, CD, U plate and the audio ... card, U disk file playback.4. Support external MP3 / MP4 / computer/mobile audio audio inputfunction etc.5. DC5V and 5 ...