For Pioneer Radio IP-BUS P99 P01 Car AUX USB Stereo Music Adapter With Mic Port Bluetooth 50 Microphone Audio Adapter Cable Features: new and Made of material, and practical to use Support TF card, USB flash drive, microph, BT-compatible 5.0, HI-FI sound. Operates on ALL pier radios with CD changer port commonly known as for IP-Bus: The BT-compatible module is made for Pier 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 ph or pad to BT-compatible module.and choose aux from your radio, then you can use your ph to play music through car speakers. You can hear music from your ph/pad/mp3(They should have blueooth function). Specifications: Compatible For: 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 UB, DEH-P4100 for SD, DEH-P5100 UB, DEH-P7100 BT, DEH-P8100 BT DEH-P88RS-II-DEHP88RS, etc 1. Please make sure your car radio has AUX mode before purchasing. This product is only suitable for radios in AUX mode! 2. The without a microph does not have the function of answering calls, while the with a microph has the function of answering calls. If you need the function of answering calls, you need to purchase a matching microph. Package Contents: 1*Audio Cable Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight manual measurement deviation for the data. _x000D_