Features: The Noise Cancelling Microphone cores features omnidirectional design, capturing sound from all directions to ensure clear sound in teaching or tours guide setting. With compactly size, this microphone cores is perfect for integration into headsets and lapel microphones, offering discreet placement without compromising aesthetics. Suitable for educators, tours guides, and music professionals who require high sensitivity to capture subtle sound variation with claritys and natural sound quality. Perfect for use in classrooms, guided tours, and various sound equipment, enhancing user experience by reducing background noise and improving speech intelligibility. Crafted from metal materials, the microphone cores ensures durability and reliability for frequent, long terms use, making it a addition to any portable sound setups. Specifications: Material:Metal Size:Approx.4.0x1.5mm/0.16x0.06inch Model:DR402 Output Impedance:2.2kΩ Sensitivity:-35±2dB Frequency Ranges: 20Hz-20Khz Omnidirectional Microphone Package Includes: 1pc Mic note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.