... can play the same as MP3 player (TF card is not included)3. Built-in Li-ion battery: 3. ... : 3W6. Audio Socket: 3.5mm stereo jack7. Audio Source: TF card,PC,MP3,MP4,MD,CD,DVD player, Mobile phone, etc ... meas:12x11.2x7cmCarton meas:57x26.2x42.5cm50PCS/CTNG.W.: 25kg Mini portable vibration desk speaker,portable laptop mini speaker