The black E6 Directional Earset Mic, Highest Gain, with Detachable 1mm Cable and 3.5mm Locking Connector for Sennheiser Wireless Transmitters from Countryman is a vocal microphone with an adjustable boom that weighs less than one-tenth ounce. It can be used on either ear for capturing audio and rejecting unwanted sound, feedback, or surrounding noise from stage monitors or nearby speakers in houses of worship, theater, and outdoor vocal and speech applications.