High-capacity external auxiliary battery -10,000 mAh- with a robust aluminium-finish body. Features dual USB and Type C outputs to charge three devices simultaneously and one Type C input connection. LED indicators for charging status, extra-flat straight design and large printing area, especially recommended for laser engraving. Presented in an attractive kraft design box. Instruction manual available in Spanish and English. The capacities shown for all our external auxiliary batteries are real, all incorporating grade A, non-recycled batteries, with a lifespan of at least 500 charge cycles and in accordance with CE regulations. In addition, they are manufactured in compliance with RoHS standards and meet the following safety requirements: Overcharge protection system for the power bank. Protection system against complete discharge, providing greater durability for the power bank. Locking system to prevent short circuits. Constant charge transfer system, according to the capacity of the target device. 10,000 mAh. USB output. Micro USB input.