This is an optional external microphone for select Boss Audio System in-dash head
units with built-in Bluetooth that feature a 3.5mm microphone input.
The microphone can also be used with external Bluetooth interface module.
The Mic will provide better performance in noisy environments.

Brand new Car DVD/Navigation/Bluetooth Microphone Mic Assembly ,
This is aftermarket part that will work with most Boss audio system.
models in dash car radio, like BV9958B BV9372BI BV9380B BV9364BI
High quality manufacturing, One year warranty from manufacturer.

Feature:
Adopting electret condenser cartridge with high sensitivity , low impedance , anti
noise and ant jamming capability , with fast and accurate data transmission,
which could guarantee the voice clearly and stably under kinds driving occasions,
it's highly improved the speech quality of hand free car kit communication
system. easy to install and reliable.

Technical Details:
Polar pattern: Omni directional Mic diameter's 9.7*4.5mm
Sensitivity:-47dB+/-2dB Frequency Range: 20-20KHz
Output Impedance: ?2.2 k? SNR: >58dB
Standard Operation Voltage: 4.5V Operation Voltage: 1.0V-10V.DC
Wire Length: 4 M
Ref Boss Audio System part no:
BAmic-1
Compatible With Models:
BV9958B BV9372BI BV9380B BV9364BI
and some new models.
make sure the audio/video system has microphone 3.5mm input. See user manual