This dual port power bank with a quick charge is one of the most convenient to keep all of your devices charged and ready to go! Its selling points include: - 2.1A output - 2 USB ports - Big imprint area for both sides - Dual port to charge two devices simultaneously and compatible with all kinds of devices - Large imprint for your full color print for full customization Specifications: 1. Capacity: 6600mAh 2. Input: DC-5V 1000mAh 3. Output: DC-5V 1000mAh, DC-5V 2100mAh 4. Charging time: About 5-6 hours