Speaker:
                Driver unit:40mm
                sensitivity: 116dB+/-3%dB
                Impedance: 32 ohm
                Frequency response:20Hz-20000kHz
                Maximum Power Input:20mW
Microphone:
                      Driver unit:6*5mm
                      sensivity:54dB+/-3dB
                      Impedance:2.2k Ohm

Wire length:2m+/-10%
material:plastic+leather headband
shining polishment headset housing
high quliaty leather headband for wearing comfort
volume controller.
Flat cable
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