This product is either discontinued or we cannot get that from suppliers.
JABRA 2489-825-209 Biz 2400 Ii Duo Mic, Headset - wired, On-ear, Headphones Dynamic, Sound Output Stereo, Microphone Boom, Noise cancelling microphone, HD Voice, Multi-device connectivity.
The Jabra Biz 2400 II QD Duo Noise-Cancelling Wideband Balanced Headset 2489-825-209 New is a stereo headset with a QD (Quick Disconnect) plug that provides instant connectivity to a wide range of desk phone systems.