The product you describe is a Bluetooth compatible module auxiliary adapter designed for vehicles with 2RCA interfaces. This module allows you to wirelessly connect your phone, tablet, or other Bluetooth-enabled device to your car stereo via the 2RCA (auxiliary) input to play audio. Here is a detailed breakdown of the main features and specifications:Key Features:This Bluetooth adapter is designed for vehicles with 2RCA interfaces. It works well with cars that have a rear CD player or navigation system, such as those from brands like Clarion.High Quality and Performance:The module is designed with premium materials to ensure stable performance and high reliability, which means it should work seamlessly for a long time without major issues.Easy Operation:Installation is very simple: plug the adapter directly into the back of your car radio or stereo, connect the red cable to 12V+ (positive power) and the black cable to 12V- (negative power).Once installed, you can pair the module with your smartphone, tablet, or other Bluetooth-enabled device to play music through your car speakers.It supports Bluetooth 5.0, ensuring a stable and high-quality wireless connection.Technical Specifications:Name: Universal Wireless Bluetooth Audio Cable Module for CarsMaterial: Plastic shell, FORdurable and lightweightBluetooth Version: Bluetooth 5.0, provides better range, stability and speed than older versionsProduct Voltage: 5-12V, compatible with most car electrical systemsWiring Power Supply:Connect the red cable to 12V+ (positive power supply) and the black cable to 12V- (negative power supply).Product Included: 1*Car Bluetooth ReceiverAdditional Notes:Color Variation: When viewing the pictures, the color of the product may vary slightly due to your monitor or lighting conditions.Size/Measurement Deviation: Due to manual measurement, the size may vary slightly (1-2 cm).