Key Features Built withAI Noise-cancellingIntelligentmicrophones Built-in Powerful leak-tolerate 27mmspeakerdelivers rich,HD Audio for callsandmusic USB-A/USB-C / QD Options Comes with Busy-lightIndicator on the headset Truly seamless collaboration with Microsoft Teams– One touch Mute,Answer & Endcalls Protein leather coveringthememory foamcushions Builtin with earprotection feature Variants 500DM AINC Stereo Direct USB Headset with MS Teams 500M AINC Monaural Direct USB Headset with MS Teams