* Speaker :
  - Driver unit: φ10mm Dynamic speaker
   - Impedance: 16 Ohms
  - Sensitivity: 106±3dB(at 1KHZ)
* Input power: 5mW (maximum)
*  Plug:  3.5mm stereo
* Microphone: condenser type
      - Polar Pattern:Omni-directiona
     - Sensitivity: -40±3dB(at 1KHZ )
* Cord length: 1.20m