Elegant and practical 300D polyester organizer. With wireless charge and built-in, 4,000 mAh charging capacity auxiliary battery. With a sober design and an original closure, including a notepad with 64 sheets, pen holder and LED indicator for charging status. The easy access to the charging station via micro USB cable - including - makes this organizer the perfect gadget for the business world. 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 RoHS standards, and in compliance with the following safety requirements: Power bank overcharge protection system. Complete discharge protection system, which increases the durability of the power bank. Blocking system to prevent short circuits. Constant charging transfer system, in accordance with the capacity of the target device.