Features 1、Nice and practical accessory which is fit for Mercedes Benz Smart 450 / Roadster / ForTwo / ForFour. 2、By operating with a Bluetooth‑enabled device, the car radio has no functional limitations. 3、Allows you to connect an external audio source, which can be streamed from a smartphone to a car stereo. 4、Pair your phone with our Bluetooth module, and then select AUX from the radio, you can enjoy music from your phone through the phone speaker. 5、Multi-function, support memory card, USB flash memory, microphone, Bluetooth 5.0, AUX, high-fidelity audio. Specification Item Type: Bluetooth Music Adapter Material: Electronics Compatible: Support memory card, USB flash memory, microphone, Bluetooth 5.0, AUX, high-fidelity audio. Applicable CD Model: Fit for Mercedes Benz Smart Roadster / ForTwo Fit for Mercedes Benz Smart 450 (all models) Grundig radio devices Four with OEM Fitment: Fit for Mercedes Benz Smart Roadster 2003-2005 Fit for Mercedes Benz Smart ForTwo 2004-2010 Fit for Mercedes Benz Smart ForFour 2004-2010 Wiring Instructions: The red power cord is connected to 12V+ The black power cord is connected to 12V- (Please confirm the corresponding socket) Package List 1 x Adapter 1 x Microphone 1 x Manual