The Countryman B3 omnidirectional wireless round lavalier microphone is all-purpose, rugged, affordable lavalier that's easy to hide in clothing, hair or props. Ideal for theater, news anchors, interviews, lecturers, churches, schools, and general lavalier applications. Captures the highest-quality audio with excellent rejection of surrounding noise. Looks great when you want to see it, and hides easily when you don't. Highly resistant to moisture and perspiration for use in hair, on the body, or in bad weather. Protective cap is easily removed for cleaning or replacement when clogged with makeup. The mic will connect to a wireless pack. Fits Lectrosonics transmitter models SM series, UMa series, LMa series and TA5F connector. Standard gain (no band) for most uses. Available in white color to blend with clothing or skin tones. Measures 2/9-inch diameter.