Simultaneously charge up to 4 of your controllers with the Armor3 'MultiVolt' 4-Port Charging Dock for Joy-Con®. It features 4 charging ports with easy-to-slide-in railing connectors and 4 battery status indicator lights that display a red light when charging and a blue light when fully charged. Its compact design is perfect for travel! Plug the included 4 ft. Type-C cable into the Type-C port on the MultiVolt and the other end into a 5V 1A USB power source (not included). Charge up and move out, soldier!