Double input and double output, it integrates Micro USB and Type-C input interfaces for more convenient charging. Environmentally friendly fireproof shell, fireproof ABS material, safe, comfortable to hold, fireproof and flame retardant 20000mAh actual standard, large capacity, compatible with mainstream mobile phone devices, no worries about battery replenishment Multiple protections, automatic power-off, intelligent constant temperature, prevents overcharging and does not damage the machine 3C certification, leading the new industry standards, creating a safer power bank, in line with international aviation standards， worry-free travel LED power display, shows the remaining power of the mobile power supply anytime and anywhere Specifications: Model: EP188 BatteryCapacity: 20000mAh Rated Capacity: 11600mAh/(5V=2A) Rated Energy: 74Wh/3.7V Input: Type-C/Micro 5V=2.1A Output: USB1/USB2 5V=2.1A Total: 5V=2.1A(MAX) Conversion efficiency: 58% Material: ABS fire retardant material Technology: Surface sun pattern Size: 145*69.5*29mm Weight: 410g Implementation standard: GB/T35590-2017