Pls NOTED this headset is used in below models of C I S C O telephone OLNY.   

C i s c o 7940， 7941， 7942， 7945

C i s c o 7960， 7961， 7962， 7965

C i s c o 7970， 7971， 7972， 7975

C i s c o 6911， 6921， 6912， 6965

C I S C O 8941，8945

Notice:      Other C I S C O model telephone， please contact me， thank you!

Headset Characterics:

This headset comes with a special 2m quick-disconnect cable， made to plug directly into your phone. You can use it with confidence. We\'ve thoroughly tested it .

• Noise-cancelling microphone filters out background noise， so voice transmission is exceptionally clear.
• flexible boom allows the mic to be positioned for optimal comfort and voice transmission. Swing-away feature lets you move the mic out of the way for beverage breaks
• Quick-disconnect feature provides an easy way to step away from the phone without disconnecting the call or even removing your headset. A 10-foot cord gives you a generous range while you\'re connected.
• Double-ear styling makes it easy to monitor activity in the area， and interact with co-work.

 Headset Key Features:

• Direct Connect Over The Head Headset， No Additional Applifiers / Adapters Required
• Soft Leathered Ear Cushions For All Day Comfort
• Superior Quality Sound with the Flexible Adjustable Microphone
• Headband Style with binaural Earpiece for Great Sound Quality in Two Ear
• Crystal head connector can be replaced by a 2.5mm plug.
• New high-grade soft ear protector， comfortable to wear
• Connect with ultrasonic quick plug QD line， easy to wear.

The QD line is 1.5m long (and 2.5m when it is stretched). The product is equipped with the microphone’s electronic mute switch， making the product highly suitable for the long-lasting telephone conferences and business calls)

Noise reduction points at microphone to ensure the other party hear clear.

Excellent sounding voice， full and nature.

Provide 15 days return， 1 month replacement and 2 years maintenance warranties.