1,headphones 2.popular headphone 3,stereo 4,OEM 5,3.5mm plug 1,headphones2.popular headphone Type: Stereo HeadphoneSpeaker: ø40mmSensitivity: 108dB S.P.L at 1KHzImpedance: 32ΩFrequency Range: 20-20,000HzRate Power: 15mWPower Capability: 150mWCable Length: 1.2mMicrophone Unit: 6×5mm-58dB±3dBPlug Type: ø3.5mm stereo