External auxiliary battery with a capacity of 2,200 mAh, featuring a curved design and made of aluminium. Equipped with a USB output and Micro USB input. LED charge status indicators and a Micro USB charging cable are included. Supplied in an individual kraft design box, with an instruction manual in Spanish and English. Micro USB input: 5V DC 1A. USB output: 5V DC 1A. The capacities displayed for all our external auxiliary batteries are genuine, with all units incorporating grade A, non-recycled batteries, ensuring at least 500 charge cycles and compliance with CE regulations. Additionally, they are manufactured in accordance with RoHS standards and comply with the following safety requirements: Overcharge protection system for the power bank. Full discharge protection system for greater power bank durability. Locking system to prevent short circuits. Constant charge transfer system, according to the capacity of the destination device.