AnyTone BT01 Bluetooth Speaker Mic
AnyTone D578UV BT01 Microphone Instructions
Android App, Firmware File, and Instruction Guide for Upgrading Bluetooth Module in the Radio (Required in order to use the BT01):
Radio Bluetooth Module Firmware Upgrade Pack (Compatible with current versions of Android)
Radio Bluetooth Module Firmware Upgrade Pack (Compatible with older versions of Android)
BT01 Firmware