Jabra Engage Mono Neckband, for Mono Headset (14121-37) is a replacement neckband which is suitable for Jabra Engage 65 Mono and Jabra Engage 75 Mono headsets. The mono neckband enables behind-the-neck wearing style which provides all-day comfort. This can be used on the left or right ear. Features - Replacement neckband - Compatible with Jabra Engage 65 Mono and Jabra Engage 75 Mono headsets - Enables behind-the-neck wearing style - Can be used on the left or right ear