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computer headphone stereo headphone Specifications: 1) Speaker:40MM 2) Impendance:32ohm+/-15% 3) Cord length:2.2m 4) Sensitivity: 108dB ± 2dB 5) Frequency response:20-20KHz 6) Plug:3.5mm stereo 7) Max input power:80mW 8) Micphone:9*7/58+/-4db(choose) 9)Many colors for your choice,red,green,black,white and so on. good quality with competitive price package:colox box or blister we can do them as your design,after you send us the design file,the format is .ai or .cdr,then we will print a sample for your reference,after you confirm the sample,we will print the mass production for you CARTON SIZE:76.3*46.2*54CM PCS/CARTON:40PCS/CARTON G.W.:17.5KGS N.W.:16.5KGS. 1.earphone,premium sound and superior bass2.on-ear design provides exceptional noise isllation3.stylish and dignity4.40mm powerful neodymium magnet for superior sound5. for all portable audio devices which with 3.5mm jack6.comply with ROHS,CE,FCC7.we produce all kinds of headphone,and we offer OEM service8.our products have one year's guarantee Speaker40MMImpendance32ohm+/-15%Cord length2.2mSensitivity108dB ± 2dBFrequency response20-20KHzPlug3.5mm stereoMax input power80mW