Bluetooth 5.3 and Lossless High-Definition Sound QualityBluetooth 5.3 technology has lower latency and stronger anti-interference, making transmission more efficient. CVC noise reduction technology can effectively eliminate echo and ambient noise, providing a clearer and smoother calling experience. Hands-Free Calling, Music & Fast Charging You can answer/reject/hang up calls with one button, freeing your hands. You can also switch to music mode to enjoy the fun of music, making your journey safer and more comfortable. Equipped with two fast charging ports, PD 30W and QC3.0, allowing you to quickly charge two devices at the same time, solving your charging problems. LED Display & 7 Color LightThe LED display can monitor the voltage in real time, making it clear at a glance, making driving safer. The light button on the side can turn on the 7-color night vision ambient light, creating a new atmosphere for your driving space. Two Music Connection MethodsBluetooth connection can be used ,After installation, search for BC82 to log in. Or insert the USB drive into the Bluetooth FM transmitter music jack and you can also start enjoying music. Multiple Safety Protectionprovides over-current protection, over-voltage protection, overheating protection, overload protection, short circuit protection, undervoltage protection and electromagnetic protection to ensure the safety of your equipment in all aspects. Note : The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be color differences, please refer to the actual item received.