Yealink WH67 Headset - Mono - USB 3.0 Type A - Wired/Wireless - Bluetooth/DECT - 393.7 ft - 32 Ohm - 20 Hz - 14 kHz - Earbud, Over-the-ear, Over-the-head, Behind-the-neck - Monaural - Ear-cup - 3.28 ft Cable - Black: