Zengcheng Promising Enterprise Co., Ltd.  

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Headset
Laplop/computer headset
* Loudspeaker diameter φ40mm
* Impedance 32Ωplus/minus15%. Sensitivity 113dB plus/minus 3dB 1KHz
* Rated power 20 mw. Frequency range 50Hz-20KHz
* Flannelette earmuffs ((PV sponge)
* Line long 1.8M. PVC line
* The zone lines wheat, Microphone 6*5-58dBplus/minus3dB
* Double plug φ3.5mm
* The ear cabinet material quality is ABS