Feature: 1. AUX cable adapter replacement for Smart Fortwo 450 Radio. Bluetooth 5.0, backward compatible with 2.0 3.0 4.0 and so on. 2. Support common MP3 format audio, and also support WMA, WAV, FLAC and other high‑quality audio format decoding. 3. Supports DSD large‑capacity transmission, stable and fidelity data transfer between devices. Support to answer calls, which has clear sound. 4. Allows you to listen to music from your phone/pad/mp3 (with Bluetooth function), which is practical to use. 5. Match the mobile phone or tablet with the Bluetooth module, and select Aux from the radio, and then you can use the mobile phone to play music through the car speakers. Specification: Item Type: Bluetooth AUX Cable Material: ABS Voltage: DC12V Bluetooth: Bluetooth 5.0 Microphone Cable: Approx.150cm/59.1in (manual measurement, please allow a slight error) Fitment: Replacement for Smart Fortwo 450 Radio. Package List: 1 x Bluetooth AUX Adapter1 x Microphone