* Speaker :
  - Driver unit: φ40mm Dynamic speaker
  - Frequency response: 20Hz to 20kHz/100Hz to 10kHz
  - Impedance: 32 Ohms/2.2KΩ
  - Sensitivity: 108±3dB(at 1KHZ)
* Input power: 100mW (maximum)
* Plug: 2 x 3.5mm stereo
* Microphone: condenser type
     - Polar Pattern:Omni-directiona
     - Sensitivity: -38±3dB(at 1KHZ )
* Cord length: 1.50m
* Connector:  Standard USB or stereo Φ3.5mm