Allows you to stream your music via the Bluetooth function of the mobile phone / smartphone to your car stereo. Made of high quality material, durable and practical to use Bluetooth music adapter, plug and play, easy installation, top sound quality No functional restrictions of the car radio, Allows connection of an external audio source. Bluetooth 5.0 version, and compatible with 2.0 3.0 4.0 other versions of Bluetooth Microphone facilitates conversation during driving and improves driving safety Specification: Name: Audio Cable Adapter Material: ABSBluetooth version: 5.0Voltage: 5-12V Microphone cable length: 1.5m Length 5cm/2.0 inch Width 3cm/1.2 inch Shell Color: Black Package Includes: 1* Audio Cable Adapter 1* Microphone Cable Note: Size for manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!