Enormous 120W Output: Spigen's advanced 3D PCB Technology allows ArcDock 39% smaller than a typical 100w charger. Small in size, but delivers 120W output, which is enough to charge 2 MacBook Pro 14-inch. simultaneously. Industry-leading GaN III Tech: The upgraded technology, Gallium Nitride 3rd Generation makes ArcDock perform better. It minimizes the ripple noise while charging to protect possible damage for you and your device. Also, it dissipates less heat compared to other Non-GaN chargers. Efficient Charging: Charge 4 Devices Simultaneously. Only single outlet is needed to charge 4 different devices at once. Single USB-C port outputs up to 100W