Electret condenser noise canceling Mic HD Sound Quality’ USB-A/ QD Options Compatible withUC & Microsoft Teams (510DM) Top-levelAcoustics & HearingProtection Variants 510DM Dual ENC Stereo Direct USB Headset with MS Teams (510M Monaural Ver.) 510DU ENC Stereo Direct USB Headset (510U Monaural Ver.) 510DP Binaural QD Headset (510P Monaural Ver.)