From its double USB output interface, to its Micro USB and USB Type C input interfaces, the BASEUS 20000mAh Portable Charging Power Bank is a versatile and reliable option. Not only does it come with built-in cables and a digital display, its energy conversion rate of 75% or more ensures that your devices will be charged quickly and efficiently. With its quick charge technology and output support for 4.5V/5V/9V/12V, this power bank is compatible with a wide range of devices, from iPhones and Samsung phones to Xiaomi and Huawei models. Its metal shell and CE, RoHS, and FCC certifications also make it a high-quality choice for those looking for a durable and trustworthy power bank.