1. Using APS high-grade material, single-core shielded wire, very durable, 2.5 meters long, can be used freely 2. Microphone: not easy to produce howling, clear voice, suitable for various mobile phone brands 3. Microphone size: diameter 6.0x2.2mm high sensitivity anti-interference microphone core 4. Directionality: omnidirectional 5. Impedance: less than or equal to 2.2k Ohm 6. Working voltage: 2.0V 7. Frequency range: 100-16kHz 8. Signal-to-noise ratio: greater than 60dB 9. Plug diameter: 3.5mm
