Countryman B6W4FF05BAT  B6 Omnidirectional Wireless Lavalier Microphone for Audio Technica Transmitters (Black) B6 omnidirectional lavalier microphone is all-purpose, rugged, affordable lavalier that is easy to hide Fits Audio Technica transmitter models T27, T31, T51, T200, T201, T210, T300, T310, 1100 Series, 1400 Series, 2000 Series, 3000 Series Microphone is suitable with Hirose 4-pin connector Sensitivity is +0dB standard gain (gray band) for most user Available in black color