... function, 88-108mhz3. support SD reader card up to infinity -TF card slot4. with LED indication light ... nails to take SD card This mini humanizing loudspeaker can connect PC, MP3, MP4, Apad etc to play music ... with high quality voiceHow to use it1. turn on the speaker, ... the speaker, will enter into FM mode, and to be charged too6. when connect the speaker with ...