1.Earphone,mp3 ,compute,pc, headset,Neckband,headphone , easy to carry; 2.Comfortable all-inclusive probe covers, 1Earphone,mp3 ,compute,pc, headset,Neckband,headphone Mic Dimensions Ø6.0X5.0mmSensitivity -39dB±3dB lmpedance ≤2.2kΩDirectivity OmnidirectionalDriver Diameter Ø30.0mmlmpedance 32Ω±30%Frequency Response 20~20kHzSensitivity(S.P.L) 105.0dB±3dB(at 1KHz)Input Plug Diameter Ø3.5mmCord ...