Works with Most Car Radios With 3.5mm input.</br>Wire Length 3 M (9 Feet)</br>Includes Dash Mount & Visor Clip.</br>With fast and accurate data transmission?? which could guarantee the voice clearly and stably under kinds driving occasions??</br>Adopting electret condenser cartridge with high sensitivity ?? low impedance ?? anti noise and ant jamming capability ??</br></br>Product Description</br></br>External Microphone Assembly For Car Radio Head Units With 3.5mm Input. Includes Microphone With 3M Cord?? Visor Clip?? Dash Mount & Foam Filter. Technical Details: Polar pattern: Omni directional 3.5mm connector Sensitivity:-30dB+/-2dB Frequency Range: 50Hz-20KHz Output Impedance: ??2.2 k?? SNR: >58dB Standard Operation Voltage: 4.5V Operation Voltage: 1.0V-10V.DC Wire Length: 3 m (9.84ft)</br><br/>http://www.amazon.com/gp/product/B015KY5J7Y