4-port car charger USB adapter for fast smartphone charging Feature: Input: 12V-24V; Output: 4USB-5V / 7A, very suitable as an alternative or additional double USB charger. Smart Charging: The fast charging USB port, built-in smart charging, will automatically detect your devices and charge them at the best speed, thus improving charging performance and providing standard charging. Protection: overheating, overcurrent, overload protection, easy to use and install. Wide Compatibility: Compatible with mobile phones, tablets, GPS, digital cameras and other USB accessories. specification: Material: PC flame retardant material Color: black / white Product dimensions: 78x32x32mm Input: 12-24 V. Output: 4USB-5V / 7A; 1USB-9V-12 ~ 1.8A The package includes: 1 x car charger