10000mAh water-resistant power bank Solar charging 10,000mAh power bank with an integrated torch. Rugged design that is water and impact-resistant ready for what your next adventure throws at it. Highly efficient solar cells by a leader in solar cell manufacture SUNPOWER®. Cells are so efficient they even draw power on a cloudy day! Solaris can be recharged in two ways, by USB or simply take it to the great outdoors.