Yealink UH36-D-C Wideband Noise Cancelling Stereo Headset, Headset cable length 1.2m, USB cable length 0.9m, Black and silver, O/S Microsoft Windows®, Apple Mac OS, Wideband, Microphone Sensitivity-44.0 dB re. 1 V/Pa, Speaker sensitivity 93 dB SPL @ 1 kHz, 60 mV, Input power normal 5 mW, max 10 mW. The Yealink Wideband Noise Cancelling USB-C & 3.5mm Stereo Headset TEAMS-UH36-D-C is a USB-C wired headset especially designed for Unified Communication, office, and call center professionals.