Safe Use Intelligent current detection connects via USB port and automatically detects and matches the charging current for fast charging of mobile devices. Smart cooling control helps manage heat generated inside the car charger, providing safer, worry charging. Ultrafast Charging 3.1A current intelligent fast charging technology enables rapid charging. Dual USB ports allow charging two mobile phones at the same time. Compatible with all cars that have cup holders. Includes reliable customer service support. LED Display & Independent Switches Realtime voltage monitoring with overload protection and automatic poweroff for safety. Smart LED display provides ataglance status. Onepull operation with two independent switches; two cigarette lighter interfaces are equipped with separate switches to offer better protection during charging. 12V24V Dual USB Car Charger Multifunction cup holder car charger with double cigarette lighter holes and dual USB ports. Realtime voltage monitoring; wide voltage range does not depend on car model. 12V24V operation suitable for many vehicle models. 3.1A dual USB car charger and quick charge cigarette lighter splitter with 3 sockets. Practical scenarios On the road with GPS navigation and music: keep your phone charged without needing to stop for a power boost. Family trips: charge two phones simultaneously, preventing one device from draining while others are in use. Fleet or rideshare use: power a GPS device and a phone at the same time across different vehicle models, thanks to wide 12V24V compatibility.