1. Using Bluetooth Main Chip, Bluetooth Version 5.0, High-Speed Transmission Without Distortion, Sound Quality Can Reach Hd Standards. 2. This Product Supports Efficient Music Transfer, Version 5.0, Compatible With The Following Versions. 3. Bluetooth 2RCA AUX Cable Adapter.Suitable For Various After-Mounted Cd Players, Such As , Pioneer, And Other Navigation Machines, The for Original-Car Has An Audio With Aux In Lotus Female On The Back, Which Can Be Inserted Opposite To The Male Head To Realize Bluetooth Music. 4. Match Your Phone Or Pad To Bluetooth Module. And Choose Aux From Your Radio, Then You Can Use Your Phone To Through Car Speakers. 5. You Can Just Insert This Item To The Back Radio Then Connect The Red Wire To 12V+, The Black Wire To 12V-. Applicable Models: Product Voltage:5-12V Colour:As Shown Material:pvc+copper wire Size:Total Length:23cm (.) Package Contents: 10 * Bluetooth Audio Cable Only the above package content, other products are not included. Note: Light reflection 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.