FEATURES- Stereo Headset/Microphone- Black, OEM pack
       This certified headset/mic offers the most in comfort, features and 
        performance - perfect for educational/training uses.
       Complete ear coverage with individual volume control.
* DNCT4: Direct Noise Canceling Microphone Technology
* Stereo headset
* Full size soft and durable leatherette headband
* On/off switch
* Individual ear rotary volume control
* Leatherette ear pads
* Adjustable boom arm
* Ambidextrous design (wear on right or left side)
* 9 foot shielded cord with 3.5mm gold-plated plugs
 
  -- SPECIFICATIONs ----
DRIVERS      - 40mm dynamic drivers
SENSITIVITY  - -67dBV/microbar, -47dBV/Pascal +/- 4dB
MIC POWER    - 1.5v to 10v
IMPEDANCE    - Headset   : 32 ohms
               Microphone: 680 ohms
FREQ.RESPONSE- Headset   : 20 ~ 20,000 Hz
               Microphone: 100 ~ 16,000 Hz