What makes this Dual USB output COOLNUT Solar Power Bank 13000mAh ,one of the best and superb gadget to keep is due to its multi-functionality. Being a premium quality and high-performance battery charger, it is a superb make you can have for your smartphone. It features a solar recharging panel, through which you can recharge this power bank under direct sunlight. Though we recommend you to recharge through the other electricity input port as it's fast with 2 Amp technology. Solar technology is only an additional feature that can be used when you don't have a power source available and takes a few days of time to recharge the Power Bank 13000mAh. The looks and appearance of this lovely and portable power bank is also so pleasant with proportioned size, to carry it easily anywhere you want. The red-black color combination Aluminium+ABS shell casing is seriously a perk when looking at this mobile charger. More added features that include is its, 4-LED power indicators for having a check of the left-up power and the LED torch for your dark stays. It recognizes the power needs of your device, and protects against over and under-charging risks, temperature, and so on. This Solar Charger is perfect for people who always tend be be outdoors.