Description 1. Advanced Bluetooth 5.4 Connectivity: Elevate your audio experience with state-of-the-art Bluetooth 5.4 technology. This versatile adapter functions seamlessly in both transmitting (TX) and receiving (RX) modes, allowing you to connect your PC to Bluetooth headphones/speakers or stream music from your phone to non-Bluetooth audio systems with enhanced stability and broader compatibility. 2. Immersive Audio & Real-time Display: Enjoy high-fidelity audio output, bringing your music to life with clarity and depth. The integrated high-definition display provides real-time status updates, clearly showing current mode (RX, TX, BT, AUX) and connection strength, ensuring you're always informed. 3. Extended Range & Multi-Source Playback: from a stable and barrier-free transmission range of up to 10 meters (approximately 33 feet), providing freedom of movement without signal loss. Beyond Bluetooth, this device supports direct TF card playback via its built-in smart decoder and offers flexible connectivity through USB and AUX output interfaces. 4. Compact & Sleek Design: Crafted with a sleek, premium finish, this portable Bluetooth adapter is designed for convenience. It measures approximately 6.62 cm (2.61 inches) in length, 2.55 cm (1.00 inch) in width, and 1.4 cm (0.55 inch) in thickness, making it easy to carry and integrate into any setup without occupying much space. 5. Optimized for Car & Low Latency: Transform your car's audio system with this Bluetooth 5.4 upgrade, compatible with all vehicle models. Powered by an intelligent chip, it ensures virtually zero delay and incredibly fast transmission, providing a smooth and clear audio stream for calls, navigation, or your favorite tunes, free from interference. Package list 1 x Bluetooth 5.4 Audio Adapter