Advanced Bluetooth 5.4 Technology: Experience seamless audio transmission with the latest Bluetooth 5.4, ensuring high-fidelity sound and improved connectivity for all your devices. Versatile 2-in-1 Functionality: Easily switch between transmitter and receiver modes to either send or receive audio signals, making it perfect for a wide range of electronic devices. Universal Compatibility: Connect effortlessly via the 3.5MM AUX port to your headphones, TV, PC, or car speakers, enhancing your audio experience wherever you go. Built-in Microphone: Enjoy hands-free calls and voice navigation with the integrated microphone, providing added convenience and safety while driving. Compact and Portable: Designed for easy transport, this adapter fits perfectly in your pocket or bag, ideal for home use or travel. Color: As Shown Material: Aluminum Alloy Package Contents: 1 * Audio Receiver Transmitter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.