External auxiliary battery in nature line, made of a combination of natural cork and wheat straw. Charging capacity of 8,000 mAh. With integrated wireless charger 15W, with input/output connector Type C + USB output. Presented in an individual box of eco design in kraft cardboard. The capacities shown in all our external auxiliary batteries are real, all of them incorporating non-recycled, grade A batteries, with a service life of at least 500 charging cycles, and complying with CE regulations. In addition, they are manufactured according to RoHS standards and with the following safety requirements: Power bank overcharge protection system, complete discharge protection system, blocking system to prevent short circuits, and constant charging transfer system in accordance with the capacity of the target device. This product can also be personalized.