Mic cimension: 6.03.0 mm Sensitivity: -40db3db Directivity: omnidirectional Lmpedance : 2.2k+ Loudhailer:32mm Impedance: 32ohm Frequency response: 20~20khz Sensitivity: 112.0 db3db(1khz) Input plug diameter: 3.5mm Cord length :about 2.5meters Blister