*Discontinued* by Jabra.  Replaced by Jabra/GN 2125 Noise Canceling binaural headset 

Jabra/GN 2115 SoundTube headsets is sleek and lightweight, this Jabra/GN 2100 SoundTube model uses Acoustic Transmission Line (ATL) technology—the first significant advancement in voice tube technology and design. GN Netcom’s ATL technology eliminates sound reverberations and distortions usually associated with plastic voice tubes. It's lightweight, very durable, and extremely comfortable, even if worn all day long. A click-stop headband provides a customized fit and pillow-soft ear cushions rest gently over the ear. This model is a binaural headset (you hear through two ears), and the 2110 is monaural (one ear). The binaural design improves audibility of weak voices and blocks out distracting ambient sounds and nearby voices. Retail Price $113.00

Key features:

• ATL technology eliminates sound reverberations
• Convenient swing-away boom
• Omni directional microphone
• Full-size leatherette ear cushion
• Two-year warranty
• Requires a Jabra Link 850 amplifier (or GN1200 smart cord) 
   

For more details see GN Netcom 2115 datasheet