Made of high-quality materials, practical and reliable Quick installation, easy to use Made of high-quality materials, anti-corrosion, wear-resistant, and non-deformed Small size and light weight Type: Mono Frequency response: 50Hz-20KHz Impedance: 2.2KΩ Microphone size: Ø9.7X6.7mm 9745 MIC Sensitivity: -32dB ± 3dB (0dB = 1V / uPa) Installation location: Reading light panel Installation method: Direct installation Fitments:For BMW 1 Series F20 3 Series F30 F35 5 Series F10 F18 X3 Tips: The product may be updated constantly,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Photo Color Material:Plastic Package Contents: 1x Microphone Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.