The POWERplus Elk is a multifunctional powerbank which can be combined with different solar and dynamo powered products. Has a 5.200 mAh / 3.7V powerbank, output 5V, external 2.5W speaker and integrated stand. The charging cables (USB in and micro USB out) are integrated in the design. Also the 3,5mm audio jack cable is integrated. The 4 LEDs gives battery status information.