Functions:Support TF Card,USB Flash Drive,Microphone,Bluetooth 5.0,HI-FI Sound. Operates on ALL Pioneer Radios with CD changer port commonly known as IP-Bus:The bluetooth module is made for Pioneer IP-BUS Radio Just plug the Black connector into the socket back of your radio You can just Insert this item to the back radio then Connect the red wire to 12V+, the black wire to 12V-. Match your phone or pad to bluetooth module.and Choose Aux from your radio, then you can use your phone to through car speakers. You can hear music from your phone/pad/mp3(They should have blueooth function). Compatible with all devices of the P-series, for example: DEH-P2500 R, DEH-P2600 R, DEH-P3500 MP, DEH-P6600 R, DEH-P9600 MP DEH-P3100 , DEH-P4100 , DEH-P5100 , DEH-P7100 BT, DEH-P8100 BT DEH-P88RS-II-DEHP88RS, etc Material:ABS colour:black Package Contents: 1 * Audio Cable Adapter Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.