[Intuitive Light Switch Design] Experience the joy of driving with our stylish rainbow light feature. Effortlessly turn off the light with a long tap on the "b" switch when not in use, and bask in the enchanting glow of rainbow hues that you control for the perfect driving ambiance. [Upgraded Bluetooth V5.4 Connectivity] The Bluetooth 5.4 technology optimizes transmission delay and connection defect problems, which enhances your audio experience with quicker, more reliable connections and minimal sound degradation. Enjoy seamless calls and music without interruption, and with automatic reconnection to known devices, it's convenience at its best. [Safe Efficient Charging up to 54W] - Coming with USB Type-C dual ports (PD 36W & QC 18W), you can charge two devices simultaneously. Our intelligent safety features ensure your devices are protected from overcharging, voltage spikes, overheating, and short circuits while charging efficiently. [Dual Mics for Noise Suppression & Hands-free Calls] The built-in dual Mics for Noise Suppression (CVC) design can reduce external environmental noise well to provide crystal clear hands-free calls. All in one button: answer/reject/hang up/recall enables you to seamlessly switch between incoming calls and music. [Powerful HiFi Deep Bass] Just press the button deep bass and you will enjoy powerful deep bass and immersive stereo music sound. The high-fidelity sound quality will make the music more dynamic and pleasing to the ear, taking your passion for music to a new level.