This power bank combines exquisite aesthetics and craftsmanship. The shell is made of 4K glossy stainless steel with a PVD cover, a perfect curvature that fits snugly in your hand. It features the world's first single type-c port for power input and output, customized for new iPhones that supports PD protocol fast charge. As the world’s largest power bank producer, ZMI applied the most sophisticated safety designs in structure and electronics.