Features: This 3.5mm car external microphone will provide you with better anti-noise environment. Plug and play, long-distance transmission with long cables. It adopts electret condenser microphone head, which has high sensitivity, low impedance, anti-noise and anti-interference ability. Stable performance: fast and accurately data transmission, clear and stable voice in various driving situations, which greatly improves the voice quality of the hands-free vehicle communication system. Easy to install: Humanized design, separate fixed base, more convenient and reliable installation. Multi-scenario use: The microphone can be pasted on walls, glass, cars, doors, etc. with stickers. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Line length: 3 meters Input voltage: 5V Signal-to-noise ratio: ≥75dB Frequency range: 50Hz-20KHz Plug: 3.5mm Package List: 1 x External Microphone