Xtenzi BLUETOOTH MIC Microphone For Pioneer AVIC X920BT X930 X910 Z110 Z130 Z120 Xtenzi brand Pioneer compatible mic ,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. Standard Operation Voltage: 4.5V Operation Voltage: 1.0V-10V.DC Wire Length: 4 M Adopting humanity design with U shape fixing clip , is more easy to install and reliable.