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 effect2.Please allow 1-3cm deviation due to manual measurementDescription:Line length: 3 metersInput voltage: 5VSignal-to-noise ratio: 75dBFrequency range: 50Hz-20KHzPlug: 3.5mmPackage List:1 x External Microphone