Intelligent Charging Chip - Automatically switches between 9V/1.67A and 5V/2A for completely optimized charging.Premium Safety - Smartly designed and built with over-voltage, under-voltage, short-circuit, temperature, and surge protection. Place in and remove your phone with only one hand!Note: Better remove phone case to active the Fast Wireless Charging function while you are using the Quick Charge 3.0 Car Charger.