... FM stereo output,play without an earphone, COOL C108 Data appliance functions Memory 761KB built-in,support to extend ... TF card to 4G maximallyData transfers data wire direct read,cardreader,bluetooth(file transmission, voice/earphone, ... at radomRingtone format mp3,midiLoudspeaker Dual speakerOther functions MP3,MP4,Hand free,Mass message ,WAP,FM,Bluetooth,Storage expansion,E-book ...