... Playback function from Audio Music Source from SD memory card or USB flashdriveNew portable aluminium vibration film loudspeaker allows the minimum ... ) THD = 10%Frequency response : 150Hz - 20KHz versatile connection to CD, DVD, MP3, MP4, mobile phone, notebook computer,ipod, PSP, and any ... players HM-801 Portable Multimedia 2.1 Speaker System, with Remote Control, SD/MMC, Give Good Sound Output