Compatible Models: Devices with 3.5mm AUX audio interface, including cars, trucks, buses, and home audio systems. Color: Black Packaging method: Boxed Size: 52 x 52 x 11 mm / 2.05" x 2.05" x 0.43" Material: Premium ABS 1. 【Versatile 2-in-1 Functionality】Experience seamless audio flexibility with this integrated transmitter and receiver. Effortlessly change between TX mode to broadcast audio from non-Bluetooth devices to wireless headphones, and RX mode to stream clear music from your smartphone to wired car stereos or legacy home speakers. 2. 【Advanced Bluetooth 5.3 Technology】Equipped with the latest 5.3 chip, this adapter ensures a lightn-fast, ultra-stable connection with minimal latency. Enjoy consistent, high-fidelity audio transmission without the frustration of signal drops or connectivity issues, keeping your music and calls uninterrupted. 3. 【Universal Compatibility & Compact Build】Constructed from sturdy ABS material, this compact adapter is designed to fit perfectly in your vehicle or home setup. It is specifically engineered for a wide range of devices featuring a 3.5mm AUX input, making it the go-to solution for upgrading older audio systems into modern wireless hubs. 4. 【Simple Plug-and-Play Setup】Designed for maximum ease of use, you can quickly pair your devices with a simple long press on the multifunction button. The intuitive LED light indicators clearly signal your pairing status and connection mode, ensuring you spend less time configuring and more time enjoying your favorite media. 5. 【Enhanced Audio Performance】Engineered with a high signal-to-noise ratio exceeding 90dB, this adapter restores original sound quality with depth and clarity. Whether you are driving long distances or relaxing at home, it delivers a theater-like acoustic experience, transforming your wired equipment into a powerful wireless sound system. Package list: Bluetooth receiver*1, audio cable*1, charging cable*1