What's in the box:

BT Audio Music Adapter Bluetooth Module RCA Microphone Adapter Hands-free Microphone Replacement for Alpine Pioneer Sony 2RCA radio (Standard)

Features:
Bluetooth module is designed for pioneers and is suitable for high mountains, while other radio modules have 2rca ports.
Just connect the 2rca connector on the back of the radio socket.
You only need to plug this item back into the radio, then connect the red wire to 12v+ and the black wire to 12v-.
Combine mobile phones or cushions for Bluetooth modules. And select the auxiliary of the radio, and then you can use your phone to play music through the car's players.
You can listen to music via mobile phone/tablet/mp3 (they must have Bluetooth capability).

Specifications:
Color: Black
Bluetooth version: 5.0
Package Size: 18*13cm
Package Weight: 46g

Packing List:
1xMusic Adapter