Feature: 1. Fitment: Replacement for Smart Fortwo 450 (all models) with AUX IN preparation, suitable for Grundig radios. 2. Audio Format: Supports MP3 audio format and high quality audio formats such as for WMA and for WAV. A great experience to enjoy mobile music while driving. 3. Function of AUX IN Cable: Pair your phone or tablet with the Bluetooth adapter, select Aux from the radio, and you can use your phone to play music through the car speakers. 4. 8Pin Connector: The car Bluetooth module has an 8Pin connector and is easy to operate. You just plug the 8Pin connector into the socket on the back of the radio. 5. Premium Material: Using upgraded premium ABS plastic housing, this cable is heat resistant and high temperature resistant, not easy to break. How to Use: Plug and Play Specification: Item Type: Car Bluetooth Module Material: ABS Bluetooth: 5.0 Fitment: Replacement for Smart Fortwo 450 (all models) with AUX IN preparation for Grundig radios NOT Replacement for Smart (451) radios Package List: 1 x Car Bluetooth Module