The brown d:fine Legacy 4066 Omnidirectional Miniature Mic Boom with TA4F Connector from DPA is a replacement microphone boom with cable for the d:fine headset (sold separately). Designed for theater and broadcast applications, the Legacy 4066 features a double vent protection system that works in tandem with a drop stopper and water-resistant materials in the mic, which help prevent damage from humidity. A headset is required.