- Advanced V5.4 Noise Cancellation for Clear Hands-Free Calls: The 5.4 Aux Bluetooth adapter features a built-in microphone that allows for hands-free calling while driving. The specialized power isolation module reduces background noise, ensuring your voice is transmitted clearly. Use the multifunctional button on the car Bluetooth receiver to easily answer, reject, or end calls. - Versatile 2-in-1 Bluetooth 5.4 Transmitter & Receiver: Effortlessly switch between RX (receive) and TX (transmit) modes with a single button press. Ideal for use in cars, home audio systems, or with TVs, this device instantly converts any wired speaker into a wireless Bluetooth device. - Intelligent Lossless Audio & Plug-and-Play Convenience: Powered by a robust 5.4 chip, it offers ultra-fast pairing, a stable connection, and superb sound quality without distortion or delay. Supports HSP, HFP, A2DP, and AVRCP for optimal audio performance. - Broad Device Compatibility & Stylish RGB Light: This adapter is compatible with a variety of devices, including TVs, older stereo systems, car AUX inputs, and headphones. The 7-color LED indicator enhances visibility in low-light settings while adding a modern touch. - Impressive Battery Life & Reliable Signal: With a built-in 300mAh battery, enjoy up to 6 hours of talk time and 8 hours of music playback. Robust anti-interference technology provides a stable connection range of up to 10 meters, even through walls. - Ultra-Portable & Quick Reconnection: At just 30g and 59mm long, it is easily portable. The Type-C charging feature coupled with automatic pairing ensures that once connected, it powers up and reconnects effortlessly each time. Use Scenarios: 1. Transform your car audio experience by connecting this adapter to your car’s AUX input, allowing you to stream music wirelessly and take calls hands-free. 2. Upgrade your home entertainment system; simply pair with your TV or stereo to enjoy high-fidelity sound without the hassle of wires. 3. Use with headphones during workouts or commutes to enjoy music and receive calls without interruptions.