Lavalier tie-clip microphones for use with VHF and UHF beltpack transmitters.Connector[tab]3.5mm mono jack - threadedTransducer type[tab]Cardioid condenser[br]Weight[tab]20g[br]Microphone : dimensions[tab]27 x 12mmØ[br]Material[tab]Metal & plastic[br]Colour[tab]Black[br]Power supply[tab]3Vdc