[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