Jabra BIZ 2300 Duo Direct Conect Noise Canceling headsets is made to connect to a deskphone with a "built-in headset" jack.  It offers crystal clear conversations with its wide-band and HD quality sound.  The Jabra BIZ 2300 Duo Direct Connect is a complete solution that includes the GN1200 smart cord bottom cable.  Super lightweight design of the Jabra BIZ 2300 Duo makes it comfortable and easy to wear. An adjustable headband and 360 degree boom arm guarantees that your headset will be comfortable through the entire day. In addition, a kevlar-reinforced cable, the Jabra BIZ 2300 Duo will last for many years to come.

Key Features:

• This headset includes the GN 1200 Smart Cord
• designed for telephones with RJ9 Headset jacks built-in the telephone.
• Dual earpiece - help you concentrate with the phone conversation.
• Noise-cancelling microphone.
• Kevlar re-enforced cords
• High-definition wideband, HD Voice allowing crystal clear communication.
• Flexible 360° swiveling boom arm allowing customize microphone location without breaking it.
• Air Shock microphone - Microphones placed too close to the mouth picks up respiratory noise. The Jabra BIZ 2300 Duo microphone is designed aerodynamically, with many small perforations and includes a foam lining that reduces the penetration of air shocks to the microphone.
• Foam ear cushions
• 2-year warranty

 For more details, see Jabra Biz 2300 Duo datasheet

Optional Jabra Biz 2300 Accessories:

Jabra Biz 2300 Series Foam Ear Cushions (10pcs)

Jabra Biz 2300 Leather Ear Cushions (10pcs) 

Jabra/GN Netcom Headset Universal Clothing Clip