1Fitment: Car bluetooth wireless module is specially manufactured, replacement for 4Runner Avalon Camry Corolla Highlander Land Cruiser Yaris Venza, etc. 2Function: Pair your phone with a bluetooth module, and select Aux from the radio, then you can use your phone to play music through your car speakers. 3Wide Compatibility: With this bluetooth Aux In adapter, you can hear music from your phone, tablet, mp3, etc., they should have Bluetooth function. 4Ensure Good Sound Quality: This bluetooth aux in cable can be directly plugged into the back aux port of the car radio, it will not cause loss of sound quality. 5 Material: Car bluetooth module is made of premium Abs material, high temperature resistant, sturdy and durable, long service life.