Promotional Privek 2,000 mAh external auxiliary battery. With adherent suction pads surfaces and ring/holder for selfies. Including input/output connections micro USB and USB. With charging indicator led lights, curved design and a wide printing area. 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.