Freeboss Hs-13s2-l6a Skin Color 4 Pin Mini XLR Single Ear Hanging Headset Microphone for Shure Body-pack Transmitter &hellip; NOTE: The 4 pin mini XLR plug microphone is for Shure model Body-pack transmitter Mic Element: Back Electret Condenser // Mic Fre. Response: 20Hz-20KHz Mic Sensitivity: -453dB // Mic Output Impedance: 2K30% Mic Max. Input SPL: 135db // Mic Power Supplier:1.5-10 V DC Mic Dimension: 5mm // Cable: 1.5mm*1.2M // Accessories: Windscreen