Durable solar charging power bank and high capacity-4,000mAh-. Sporty cut and soft silicone coating. Specially designed for outdoor activities, splashproof and with aluminum carabiner carrying clip. Dual USB output for charging two devices at the same time, with LED charge status indicators and powerful LED light with SOS signaling for use in emergencies. Micro USB charging cable included. Available in different colors and individually packaged in an attractive designer box. The capacities listed on all our power banks are real and include all Grade A and non-recycled batteries, with a life of at least 500 charge cycles and complying with CE regulations. In addition, the item is manufactured according to RoHS standards and meets the following safety requirements: Device overload protection system. Full discharge protection system for longer life. Locking system to prevent short circuits. Constant charge transfer system, based on the capacity of the target device.