MODEL- AC-840             VENDOR- CYBER ACOUSTICS
    
FEATURES- Internet Communication 
       USB Mono Headset and Boom Microphone.
       DNCT4: Direct Noise Canceling Microphone Technology 
       Monaural headset with Adjustable headband 
       180 degree microphone with Adjustable boom arm
       Leatherette ear pad 
       Ambidextrous design (wear on right or left side) 
    
  -- SPECIFICATIONs --------------------------------
HEADSET SPEAKER   - 27mm dynamic driver
MICROPHONE        - -67dBV/Microbar
                    -47dBV/Pascal +/- 4dB
MIC POWER VOLTAGE - 1.5v to 10v
IMPEDANCE         - Headphone : 32 ohms
                    Microphone: 2.2K ohms
FREQUENCY RESPONSE- Headset   :  20-20,000 Hz
                    Microphone: 100-16,000 Hz
CABLES            - 7 foot shielded cord with USB 2.0 connector 
www.cyberacoustics.com