Color classification: (telephone) direct rolling line crystal head (connected to the computer with direct winding 3.5 double plug II (telephone) direct winding crystal head， with quiet tuningWear: circumauralHeadset type: CableThere is no microphone: aAfter sale service: Headset QuanguolianbaoPlug: otherHeadset plug type: otherHeadset output audio: communication equipmentCable length: 2.3mSensitivity: 38dB+1dBImpedance: 150 ohmsFrequency range: 300-6400HzHeadset category: noise HeadsetModel: H10