This Flex Boom Headset contains an excellent noise cancelling microphone boom. so your voice will come through clear despite surrounding distractions. All monaural designed headsets offer a comfortable and cool fit. Use the flexible microphone boom to adjust freely to any position. Model Structrues: Durable and flexible hose boom is easy to adjust Extra noise cancelling microphone effectively reduces surrounding noise. making your voice heard clearly Anti-static shock Microphone provides protection for hearing health Click-stop headband for superior fit and comfort Durable and flexible hose boom is easy to adjust Accessories Options: Foam or protein leatherette ear cushion is optional Intercom connecter options:4P4C (RJ9)plug. 2.5mm .3.5mm stereo plug or USB2.0 plug. M-Volume Controller (with Mic Mute) is optional. QD (Quick Disconnect) function is optional Two Standard QD plugs can be chose Structure Features: Comfortable ear cushions . lightweight headband and flexible cord design