MODEL- AC-645             VENDOR- CYBER ACOUSTICS
 
FEATURES- Neckband Speech Recognition Headset- Silver, Retail package
       This certified headset/mic offers the most in comfort, features
        and performance.
       Neckband style with volume/mute control.
* In-line mute and volume control
* Amplified noise canceling microphone element
* Comfortable neckband design
* Stereo headset
* Flexible microphone arm
* 7' sheilded cord
* Gold plated plugs 
  
  -- SPECIFICATIONs -------------------------------------
DRIVERS   - 27mm dynamic drivers 
CONNECTORs- 3.5mm gold plated plugs  
MICROPHONE- Output         : -67dBV/microbar, -47dBV/pascal +/- 4dB
            Power voltage  : 1.5v
IMPEDANCE - Headphone      : 32 ohms
            Microphone     : 680 ohms
FREQUENCY RESPONSE- Headset:  20~20,000 Hz  
                 Microphone: 100~16,000 Hz 
www.cyberacoustics.com