[Aluminum Alloy Material] Advanced all-aluminum alloy body with scratch-resistant technology, ensuring durability and keeping the 12V USB socket looking brand new. The upgraded metal USB cigarette lighter socket does not overheat at high temperatures, making it safer than plastic. [Three USB Ports] Equipped with dual PD 3.0 30W USB-C ports and a QC 3.0 18W USB port, the 78W 12V car USB port charges three compatible devices simultaneously, consistent with PD 2.0/QC 2.0/1.0. It provides the fastest charging for all non-fast charge devices. [LED Voltage Display] With a blue LED voltage display, the USB socket automatically monitors the vehicle's battery and electrical system, displaying the car voltage on the screen. The three USB charger socket allows you to monitor the battery health while driving. [Power Button Switch] Designed with a power button switch to control the three USB ports and LED voltage display, preventing battery drain from continuous illumination after the en