The AT829CW is a wireless clip-on lavalier condenser microphone with a cardioid polar pattern. It is designed for professional business presentations, public speaking and theater performances. The AT829CW microphone is intended to be worn on the clothing for excellent yet unobtrusive sound pickup. The wide-range capability of the microphone ensures clean, accurate reproduction with high intelligibility for speakers,presenters and other performers. The AT829CW's cardioid polar pattern provides a 120 degree angle ofacceptance. It includes a 1.4 m (55 in.) permanently attached miniature cable. Its free end terminates in a locking 4-pin connector for use withAudio-Technica UniPak body-pack transmitters. The AT829CW microphone also comes equipped with a clothing clip and a windscreen. Operation For use as a lavalier, attach the microphone about six inches below the chin. Anticipate movements that may cause the microphone to rub againstor be covered by clothing, and position the microphone to avoid it. The provided foam wind screen simply slips over the head of the microphone, effectively reducing wind noise and popping. Avoid leaving the microphone in the open sun or in areas where temperatures exceed 110 degrees F (43 degrees C) for extended periods. Extremely high humidity should also be avoided.