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