... time:2~3hoursMaterial:ABS Plastic, Wooden BoxFunction:Support SD card, USB, FM, can connect to MP3,CD, ... :13*13*14 cmProduct Weight:834gIntroduction:1`Support SD card, USB, connecting your MP3,CD,DVD,VCD, ... 4`Built-in FM radio and high quality digital amplifier.5`5-inch magnetically-shielded speaker6` ... connect to computer for power supply Built-in digital power amplifier, pure and quality sound speaker. ...