【ROTATABLE LED SCREEN】：Bluetooth car adapter 1.4 inch big screen to better display phone calls, FM channels, music, and other information, and detect and display your car's battery power when the car is started. 90-degree rotation LED screen offers the best viewing comfort. The ideal screen size to assist you in driving safely without disturbance 【Immersive Hi-Fi Sound】: Elevate your driving pleasure with undisturbed music streaming options. Choose from Bluetooth, USB Flash Drive (≤64GB), or microSD Card (≤64GB) to enhance your car stereo. Immerse yourself in pristine sound quality, thanks to advanced noise reduction technology. Our device supports a wide range of music formats including WMA, MP3, WAV, APE, and FLAC, ensuring a versatile and high-quality listening experience. 【Advanced PD&QC3.0 Fast Charging】:Elevate your charging experience with our dual USB port devices, powered by the cutting-edge PD3.0 and QC3.0 technology, globally acclaimed for its efficiency. This technology surges ahead, delivering charging speeds up to 4 times faster than conventional chargers, capable of charging compatible devices to an impressive 80% in just 35 minutes. 【Enjoy Hands-free Calls】: technology provides a stable connection and echo-cancellation can reduce background noises for better hands-free calls, so you can answer phone calls with a press of the button. 【Enhanced Safety Assurance】: Our chargers are fortified with a comprehensive suite of safeguards, including over-current protection, over-voltage protection, intelligent temperature control, and short-circuit protection. These intelligent features ensure not only swift but also secure charging for all your devices.