Check out the Pioneer CPM1083 Replacement External Microphone's Key Features
(Pioneer CPM1083)

• Replacement Microphone for Pioneer Bluetooth Units
• Highly sensitive microphone
• Universal 2.5mm connection - Can work with many other car kits
• Approx. 3m Length cable

Overview

The Pioneer CPM1083 is a replacement external microphone for Pioneer in-dash head units with built-in Bluetooth that features a 2.5mm microphone input. External microphones provide better performance in noisy environments (compared to microphones located inside the faceplate of the radio).