Features: Using Bluetooth-compatible 5.0 version, the compatibility, stability and response speed are better than the previous version. The 3.5mm plug can connect audio devices such as for cars and sound effects without Bluetooth-compatible through the AUX interface, making it Bluetooth-compatible-enabled. Compared with the FM Bluetooth-compatible transmitter, the signal transmission through the AUX port is more stable, the speed is faster, and the Bluetooth-compatible connection is simpler. The anti-current interference circuit design effectively isolates the 'squeak' caused by the current, making the sound quality more pure. 0.35-1 meter spring wire, the wire is made of high-resilience TPE material, which can be stretched at will without deformation, anti-winding and not messy, easy to store and use. Support hands-free calling, release your hands to make driving safer. Built-in high-definition noise-cancelling microphone, clear and echo-free incoming calls. Barrier-free straight line 10 meters transmission. Powered directly by USB, no need to worry about low power and battery life. Memory connection, after the first connection, it can be automatically paired and connected the next for time it is turned on. Package Includes: 1x Aux Bluetooth-compatible Adapter Specifications: Material:ABS Transmission distance: 10m Cable Length:Approx.35cm/13.78in(Not pulled up) note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.