Features: Plug & play-, Plugs into a standard 3.5mm Jack, Wire Length 3M/10FT. Adopting electret condenser cartridge with high sensitivity, low impedance, anti noise & ant jamming capability. With fast and accurate data transmission, which could guarantee- the voice- clearly and stably under kinds driving occasions. Built-in clip design gives you better quality sound during transmission, highly improved the speech quality of hand free car kit communication system. With U shape fixing clip, more easy to install and reliable. Specifications: Material: PVC+metal Length: approx 3m/10FT Sensitivity: omnidirectional - 32dB Impedance: 2.2K Note: Please allow 1-3cm error due to manual measurement. please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x External Microphone