Jabra 2104-820-105 GnNetcom GN2124 Noise Canceling Monaural Headset, Single Side Convertile Headset 

• Connect to your desk phone with QD (Quick Disconnect) connect cables, and amplifiers sold separately.
• Flexible 4-in-1 design allows for headband, behind-the-neck, ear hook, or ear loop wearing style. You Choose!
• Th GN2124 also features a Noise Canceling microphone (standard microphone sensitivity) to eliminate ambient noise.
• PeakStop™ safe sound and superior hearing protection
• Ultra Noise Canceling Microphone best-in-class Noise Canceling technology
• Omni-Directional Microphone picks up the sound of your voice
• Requires additional 
• The Jabra GN2124 is lightweight, easy to use
• Leatherette Cushions