Cisco 980 Wired/Wireless Over-the-head, Over-the-ear Stereo Headset - Black Anthracite - Binaural - Circumaural - 365.8 cm - Bluetooth - 24 Ohm - 20 Hz to 20 kHz - 120 cm Cable - MEMS Technology, Uni-directional Microphone - Noise Canceling - USB Type A,