The Adesso Qi Charging Pad is the perfect charging companion for travelling business people and tourists alike. The foldable design allows it to be easily stored in back packs,laptop cases, airplane seat pockets and much more. It can charge 2 devices at the same time, allowing you to use one socket to charge 2 Qi Compatible devices! No need to worry not having enough battery when traveling with a friend. The charging pad comes with a AC adapter, allowing users to plug in to any wall socket in the United States. When in use,the LED turns blue when in quick charge mode, and green when in normal charging mode. This wireless charger has an incredible 15W max output for any device capable of charging at that wattage. It is capable of charging through cases up to 6 millimeters thick without slowing down. Charge 2 devices at one time. Both charging hubs have a no-slip cross. Charging pad turns off automatically to prevent overcharging your device's batteries, resulting in longer battery life.