Active noise-canceling (ANC) microphone meets the highest standards to receive the coveted "6 Dragon" rating for speech accuracy by NuancePro-Flex wire microphone boom for perfect placement40mm mono (monaural) speaker with deep bass sound delivers crystal clear audioComfortable foam ear cushionReversible for left or right side usageStainless steel adjustable headband folds flat for storageConvenient in-line mute controlExtra long 8-foot shielded cable with quick disconnect connector and color-coded 3.5mm plugs for PC use