UNIVERSAL ADAPTER AUX BLUETOOTH 2x RCA CHINCH MICROPHONE: With this adapter, you can retrofit your auto with wireless audio transmission capabilities. The module supports Bluetooth transmission version 5.0 and lower versions, making it compatible with all smartphones (android,apple,windows) It also comes with a microphone for calls. The length of the cable with microphone is 150cm. The signal is transmitted through the chinch outputs. This solution allows you to connect the module to most radios equipped with CHINCH/RCA input. The range is about a few meters. Connection: Simply connect the signal to the radio via chinch plugs. You should also connect the power supply by plugging in, e.g. in cubes ISO. Connect the microphone with the jack plug. We can also use the RCA > Mini jack 3,5 mm adapter if our radio has an input for a "small jack". Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.