Flexible, sustainable, powerful – this is what distinguishes our Powerbanks belonging to the Flex series. Offering six functions in a robust and water-resistant housing it provides: powerbank, battery charger with charge level indicator, secure battery storage, display for capacity check, double protection against short circuits, fast battery replacement. The Powerbank Flex3 provides space for a battery type 18650 (included) and has a capacity of 3400 mAh.