... & low price 4.OEM & ODM welcome Portable Mini mp3 Speaker with SD TF MMC Card We are a ... professoal manufacturer of usb speaker,mini speaker,active speaker,portable speaker,computer speaker,MP3 speaker,MP4 speaker, SD ... disk speaker.2.Portable SD card speaker for MP3,MP4,MP5,PC,notebook and mobile phone3. ... function speaker.8.Compatible with various bluetooth phones,MP3/MP4/CD/PC/MAC/PSP ect.9.Built ...