The Countryman B3W4FF05LAX B3 Omni Lavalier Mic is an ultra-miniature, professional lavalier microphone designed for the most discreet body-worn applications in broadcast, film, theater, and presentation. As part of the B3 series, it is one of the smallest high-performance microphones available, allowing it to be hidden with exceptional ease under clothing or in hair. It features an omnidirectional polar pattern that provides natural, open sound capture from all directions, which is advantageous for maintaining consistent audio quality even when the wearer turns their head. This model is set to a standard sensitivity, offering a balanced output level that performs reliably across a wide dynamic range of speech and vocal performances.

The microphone is configured for direct compatibility with a specific range of professional Shure wireless systems, including the AD, ADX, AXT, GLXD, PGXD, QLXD, and ULXD series transmitters. It terminates in a TA4F connector, which plugs directly into the bodypack transmitter, ensuring a secure and reliable connection without adapters. The included cable is extremely thin and supple, designed to lie flat and avoid creating tell-tale bumps under clothing, and it is permanently attached to the microphone capsule itself. The light beige color of the microphone body and cable further enhances its ability to disappear against skin or light-colored clothing.

Despite its tiny size, the B3 does not compromise on audio quality. It delivers clear, intelligible speech with a smooth frequency response tailored for voice. Its design effectively minimizes clothing rustle (when properly mounted) and handling noise. The combination of supreme discretion, reliable Shure wireless compatibility, and proven Countryman audio performance makes the B3W4FF05LAX a go-to choice for sound professionals in film, broadcast news, and high-profile events where completely invisible microphones are a non-negotiable requirement for capturing clean, natural dialogue.