Description:
Superior quality sound with the flexible adjustable noise cancellation microphone.
• Helical headphone cable which will avoid damaging during the use.
• Comfortable to wear: made of the flexible metal hose with the positioning accuracy MIC + Structural Design + Durable.
• Hearing protection technology care of the user's hearing.
• Direct connect over the head headset no additional amplifiers or adapters required.
Accessories Options: 
RJ-A
RJ-B
RJ-C
2.5mm
3.5mm 
Structure Features:
Driver Unit                  1×28mm
Frequency Response 100-10kHz
Impedance                  150  ohm
Sensitivity                    125dB
Max input power          5mW