With micro-input,type-c output/input , flashlight and led digit display. Removable design. No need weld. Can hold 6pcs 18650 flat batteries (Batteries not included) Mobile power bank shell kit With anti-reverse connection protection Please use new 18650 flat-head batteries (Batteries not included) Standard max in/out : 5V-2.1A Type: Standard Charge Colour: Black Material: plastic Size: 137 x 80 x 23mm Package Contents: 1 x 18650 Power Bank Case Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.