Multimedia speaker 1, RMS:30W+10W*2 2, USB/SD, FM,Vedio 3, Digital tube display screen 4, Key ... button with remote control 2.1 Ch USB multimedia SpeakerFeatures1,USB/SD card support mp3/4/5 format, can add ... ,Quantity:651sets/20gp,1116sets/40ft,1581sets/40HQ 2.1 Ch USB multimedia Speaker