Brand Name: FIFINE Transducer: Electret Microphone Set Type: Multi-Microphone Kits Battery Type: Others Frequency response: 20Hz-20KHz High-concerned chemical: none Style: Hanging Microphones Use: Computer Microphone Origin: Mainland China Enclosure material: Metal Communication: Wired Built-in Battery: No Package: Yes Polar Patterns: Cardioid Certification: CE Diaphragm: S-Mall Power Supply: 5V Polar Pattern: Uni-directional Frequency Response: 50Hz-20kHz Sensitivity: -43±3dB (at 1kHz) S/N Ratio: 78 dB Max.SPL: 130dB(at 1kHz≤1% T.H.D) Electrical Cureent: 70mA