Countryman B3 Omnidirectional Lavalier Microphone - Standard Sensitivity with TA4F Connector for Shure Wireless - Light Beige . The black B3 Omnidirectional Lavalier Mic, Standard Sens, with 3.5mm Locking Connector for Sennheiser Wireless Transmitters from Countryman is a water-resistant, miniature lavalier microphone for capturing high-quality audio. About. Lavalier Microphone (Countryman B3) This article applies to: Classroom Technologies. For assistance with classroom audio-video equipment, please contact your local IT support staff. It can be used in a variety of applications such as a tie-clip lavalier in interviews, a hair-hidden mic for drama, a water-resistant mic … Lavalier Microphone for Shure Wireless Systems With Switchcraft TA4F … It can be used in a variety of applications such as a tie-clip lavalier in interviews, a hair-hidden mic for drama, a water-resistant mic … Faculty and instructors are being issued high-quality clip-on microphones, commonly known as lavalier or lapel mics… The beige B3 Omnidirectional Lavalier Mic, Standard Sens, with 3.5mm Locking Connector for Sennheiser Wireless Transmitters from Countryman is a water-resistant, miniature lavalier microphone for capturing high-quality audio.