Power bank Silicon Power GS15 20 000 mAh - Premium quality battery cells provide enough power to charge almost any smartphone up to 2-4 times. Excellent materials and high-quality construction make the power bank extremely durable and at the same time comfortable to hold thanks to its ergonomic shape. Specification: Dual input Micro-B & Type-C, Dual USB output 2.1A, 20000mAh. Battery: lithium polymer. Housing color: black