Model number: MT-HP099 Omnidirectional microphone Mic unit diameter: φ6.0±2.7mm; speaker: φ50mm 118±3 dB is the sensitivity. Mic Sensitivity: -38±3 dB Impedance: 32Ω±15% 20–20,000 Hz frequency response Color: BK+Gray/BK+Orange/WH+Gray Gold-plating interface Weight: 400±5g; length: 2.20±0.01m; USB cable