... 4.Speaker unit:5.25"+3"*2 2.1 speaker, computer speaker, multimedia speaker, iphone speaker, USB speaker, MP3 speaker ... speaker system, subwoofer speaker,karaoker speaker. 2.1 Speaker with remote control Specification:Model No.:XC-8810. TDA2030*3 SubwooferSatelliteOutput power: ... *120*168mm(mm) Function:USB/SD card reader, Remote Control, FM function. Karaoker Function,LED screen, customer can option ...