Headphone 
* Driver unit : 40mm Diameter Neodium Magnet unit 
* Frquency Range : 20 ~ 20,000Hz 
* Impedance : 32 ohm 
* Sensitivity : 102dB ± 3dB(at 1kHz) 
* Maximum Power input : 100mW 

Microphone 

* Frquency Range : 30 ~ 16000Hz 
* Impedance : 2.2 Kohm 
* Sensitivity : - 5dB at 1 KHz 
* Maximum Power input : 0.5mA 

Jack : 3.5mm Stereo 
Cord : 2.5m±10% Fabric type