2.5mm Hands Free Bluetooth External Mic Microphone for Car Pioneer Stereos Radio Receiver

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Specification: Compatible for Pioneer Plug 2.5mm connector Sensitivity -30dB+/-2dB Wire Length 4 M (13.1ft) Frequency Range 50Hz-20KHz Operation Voltage 1.0V-10V DC Standard Operation Voltage            4.5V Output Impedance ≤2.2 kΩ SNR >58dB Polar Pattern Omni directional Mic diameter's 9.7 X 4.5mm                  Package Included: 1 X Microphone