This 5 pack dual USB set is made for convenient everyday charging in vehicles with a standard cigarette lighter outlet. Each compact adapter supports input from DC 12V to 24V and provides up to 5V 2. 4A max shared output across two USB ports, allowing two devices to charge at the same time through their own USB cables. The small plastic housing fits neatly in most cars and trucks, while the blue LED ring helps you find the ports in low light and confirms the charger is powered. Suitable for phones, tablets, e-readers, and other USB powered devices, these adapters are a practical choice for commuting, travel, family vehicles, and keeping spare chargers in multiple locations.