MODEL- AC-750             VENDOR- CYBER ACOUSTICS
    
FEATURES- USB Earclip Headset with Microphone
       Volume control and mute feature 
       Amplified noise canceling microphone 
       Monaural headset 
       Adjustable boom mic 
       180 degree microphone 
       Adjustable boom arm 
    
  -- SPECIFICATIONs ----------------------------------
HEADSET SPEAKER   - 15mm dynamic drivers
MICROPHONE        - -67dBV/Microbar: 
                    -47dBV/Pascal +/- 4dB
MIC POWER VOLTAGE - 1.5v to 10v
IMPEDANCE         - Headset   : 32ohm
                    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