??Aluminum Casing?? Ollcuz 12V 24V USB Car Charger designed with metal appearance which can keep it always like new and better heat disation. Besides,its protective cap design enables it life water-proof and dust-proof, it not only can use on car but also an excellent accessories for Golf Cart, Boat, ATV, motorcycle, bike, truck, RV, etc.??Dual QC3.0 USB Ports?? Ollcuz 12V USB Outlet features with 2 quick charge 3.0 USB ports, it can charge two compatible devices up to 4 times faster than traditional charger in the same time. (ONLY provide full charging speed for non-Quick Charge devices)??Digital LED Display?? Ollcuz 12 volt usb port for car equipped with a blue integrated LED volt meter which can monitor the vehicle’s battery and enable you know the health of battery while driving then avoid voltage abnormal issue.??EASY INSTALLATION?? This cigarette lighter replacement socket size fits most vehicles’ dash panel. Just connect “+” to fuse box for electricity, and “-” to negative pole. Use