MODEL- AHS423             VENDOR- ALTEC LANSING
    
FEATURES- Stereo Headset with Microphone
       This stereo, over-the-head design offers high-volume, high quality 
        sound and is a popular choice for call centers.
* High-volume, premium 32 mm neodymium ear-phones deliver powerful, rich 
  sound.
* Soft foam ear-pads
* Noise canceling microphone helps eliminate background noise
* Gold-plated 3.5 mm connectors
* Handy in-line volume and microphone volume controller
    
  -- SPECIFICATIONs -----------------------------------
FREQUENCY RESPONSE- Headphone : 20 Hz - 20 kHz
                    Microphone: 100 Hz - 10 kHz
  www.altecmm.com