【 Humanized environment light switch design 】 Enjoy the joyful driving experience brought by our fashionable rainbow light design to the fullest. Immerse yourself in fun while easily turning off the lights by double clicking the red "B" button when not needed. Enjoy the charming atmosphere of rainbow lights and fully control your driving atmosphere. Equipped with two USB ports (PD 36W and USB A 12W), it can charge two devices simultaneously. Built in overcurrent protection, overvoltage protection, intelligent temperature control, and short circuit protection, effectively ensuring charging safety.[Clear music stream] Bluetooth 5.3 provides a stable connection, while noise cancellation (CVC) and echo cancellation technologies provide an amazing hands-free calling experience. In addition, this Bluetooth car adapter supports Bluetooth connection and USB drive connection (≤ 64GB).[High fidelity deep bass and backlight] Simply press the "B" button and you will enjoy powerful deep bass and immersive stereo sound. High fidelity Hi Fi sound quality will also make music more dynamic and pleasant, elevating your passion for music to a new level.[Upgrading Bluetooth 5.3 Technology] The latest Bluetooth 5.3 technology optimizes transmission delays and connection defects. Bluetooth 5.3 will bring you faster, more stable, and smarter connections, with less sound quality loss and uninterrupted call and music experiences. Pairing can be completed in just 1 second, and there is no need to repeat pairing after successfully pairing with your device for the first time