4,000 mAh external battery in recycled aluminium. With USB output and USB Type-C input/output. LED charging status indicators and Type-C charging cable included. Recycled aluminium is a material with almost infinite recycling possibilities, without losing its original properties and consuming less energy in the process. GRS (Global Recycled Standard) certification ensures the recycled origin of the material used to produce the product. USB Type-C Input/Output: 5V DC 2.4A; USB: 5V DC 1A. The capacities shown for all our external batteries are real, incorporating only Grade A and non-recycled batteries, with a lifespan of at least 500 charge cycles and in accordance with CE regulations. Furthermore, they are manufactured in compliance with RoHS standards and the following safety requirements: Overcharge protection system for the power bank. Full discharge protection system, offering a longer lifespan for the power bank. Locking system to prevent short circuits. Constant charge transfer system, compatible with the capacity of the target device.