... .3.5mm RCA Jack 4.Speaker unit:4"+3"*2 2.1 speaker, computer speaker, multimedia speaker, iphone speaker, USB speaker, MP3 speaker, mini ... box, speaker system, subwoofer speaker,karaoker speaker.2.1 Multimedia Speaker Specification:Model No.:XC-8801.TDA2025*2 SubwooferSatelliteOutput power: 8WOutput power: 3W×2Frequency ...