Model: GF-821Pro. Spc.:14*11*3cmFunction explanationFixed Power:2WFixed Resistance:4Erequency response:275-20 Ks(Hz)Power supply electric voltage:3VN. W. Kg:0.3kg/PCCtn. Size(cm):40*35*40Qty/Ctn(pcs):

Model: GF-824BPro.Spc.: 12*3.6*3.6cmFunction explanationConnectors:?.5mm StereoPower Source:燚C3VOutput(RMS):1W*2 FrequencyResponse:200Hz-20KHzSpeakers Units:(20mm*20mm)*2N.W.kg: 22kg/ctnCtn./Si

Model: GF-831Pro.Spc.: 12*90*6cmFunction explanationFixed Power:3WFixed Resistance:4Erequency response:275-20 Ks(Hz)Power supply electric voltage:3VN.W.kg: 0.3kg/pcCtn./Size(cm): 40*35*40Qty/Ctn(pcs):

Model: GF-833Pro. Spc.:14*13*6cmFunction explanationFixed Power:3WFixed Resistance:4Erequency response:275-20 Ks(Hz)Power supply electric voltage:3VN. W. Kg:0.3kg/PCCtn. Size(cm):40.35*40Qty/Ctn(pcs):

Model: GF-841Pro.Spc.: 20*7*3.2cmFunction explanationoutput power:0.9W * 2Power supply frequency:50/60HZThe power enlarger Input sensitivity:>83 DbasIntelligent degree:470MVThe circuit importation res

Model: Gf-851Pro. Spc.:20.7*5.3*6.2cm(open dim)10*6.3*6.7cm(flod-able dim)Function explanationPower supply: Battery(aaa 1.5v*4), DC 5v(usb cable for pc), or AC power adaptor cord(output 6v,300-800ma)S

Model: GF-854BPro.Spc.: 15.5*15.5*6.5cmFunction explanationpower supply DC 6 Volt ( AAA batteries * 4 )Or AC adaptor output powr =2+2W/channel, @8 OHM @10% THD speaker 34mm speaker , 4ohms signal cabl

Model: GF-858APro.Spc.:18*12*30cmFunction explanation:Input sensitivity:500mV OutputPower:2W*2 8(OHM) 10% TDHSpeaker:1.25inch*4,4(OHM) 3WFunction: Vol+ Vol- Control, Power, SwitchAA Size Battery (not

Model: gf-861Pro.Spc.: 25.8*22.5*5.5cmFunction explanationOutput power:8 5w*2Rated impedance:8Frequence response: 20hz - 20khz thd:For all ipod and mobile jackN.W.Kg: 12kg/ctnCtn./size(cm): 59*56*39mQ