Features: 1. Uses Bluetooth main chip, Bluetooth version 5.0, enabling high-speed transmission without distortion; sound quality can reach HD standards. 2. Supports efficient music transfer with Bluetooth version 5.0, backward compatible with earlier versions. 3. Bluetooth AUX cable adapter suitable for aftermarket CD players, such as Pioneer and other navigation systems. Works with cars that have an audio input with a female AUX jack on the back, allowing connection via a male plug to enable Bluetooth music playback. 4. Pair your phone or tablet to the Bluetooth module, then select Aux on your car radio to play audio through the car speakers. 5. Simply insert the device into the rear of the radio and connect the red wire to 12V+ and the black wire to 12V-. Specifications: - Applicable models: Suitable for most vehicles equipped with an AUX interface - Bluetooth name: Jierui-Bt 5908 - Bluetooth version: 5.0 - Product voltage: 512V - Overall length: 24cm - Material: PVC + copper - Color: Black Package Contents: 1 x Wireless Bluetooth Audio Receiver Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 13cm.