1 Up and down retractable headband adapt to a variety of head shape2 Using soft microphone cotton can effectively reduce the background noise talk more high definition and more comfortable 3 The hose has resistance to bending you can adjust the hose to the position you think comfortable 4 Comfortable ear cushions fine texture removable and replaceable5 Durable and resistant to swing headset cable pure copper impedance is low the sound is not affected6 5 kinds of plug design compatible with a variety of devicesSpeaker parameters 1 Size diameter 28mm2 Distortion less than 0 1 3 Impedance 150 ohms4 Sensitivity 118DB 3DB5 Frequency response 200 4000HZMicrophone parameters 1 Microphone omnidirectional2 Signal to noise ratio greater than or equal to 52DB3 Distortion less than 0 1 4 Impedance 2200 ohms5 Sensitivity 34DB6 Frequency response 100 3000HZ
