U-voice UVC863-H4P Lavalier Microphone for Audio-technica Compatible with Audio-Technica body pack transmitters: T27, T31, T51, T200, T210, T300, T310, 1100 Series, 1400 Series, 2000 Series, 3000 Series. Element: Electret Condenser Pattern: Omnidirectional Cord Length: 48 Inches Package Included: Metal Cover Windscreen, Tie Clip