Portable mini Speaker 1.Portable Speaker 2.can use the USB,SD,MMC card with MP3,MP4,Mobile,FM 3.frequency87.5-117MHZ. Plastic mini Speaker1.It can use the ... USB,SD,MMC card with MP3,MP4,Mobile,FM ... .Two charging interface3.5mm charging interface and Nokia charging interface. Mini Speaker with FM/MP3/MP4