FLTP Microphone Mic 2.5mm For Car Vehicle Stereo Radio GPS DVD Bluetooth Enabled Head Unit Adopting electret condenser cartridge with high sensitivity , low impedance , anti noise and ant jamming capability , Aftermarket microphone works with most Pioneer car radios with 2.5mm input. With fast and accurate data transmission, which could guarantee the voice clearly and stably under kinds driving occasions, Includes Dash Mount & Visor Clip. Wire Length 3 M (9 Feet)