Feature 1New revamped design gives you better quality sound during transmission 2Adopting electret condenser cartridge with high sensitivity , low impedance , anti-noise and ant jamming capability 3Lightweight and stylish 4Adopting the muffled sound effect, outstanding 5Microphone can be glued with sticker to the wall, glass, car, door, etcSpecificationFeatures: New revamped design gives you better quality sound during transmission. Adopting electret condenser cartridge with high sensitivity , low impedance , anti-noise and ant jamming capability. Adopting the muffled sound effect, outstanding. Microphone can be glued with sticker to the wall, glass, car, door, etc. Lightweight and stylish. Mini microphone is suitable for Hero3 Hero 3and or Hero4. Specifications: Adapter Cable length: Approx. 17cm or 6.69inch Frequency range: 30Hz- 15KHz Impedance: 2.2Kohm Sensitivity: -52DB Color: Black Weight:27g Package Include: 1 x 3.5mm mini Microphone 1 x Adapter Cable