Led screen The LED digital screen will clearly display the power of the external battery pack. 4 in 1: Features a lightning port, USB C port and two USB A outputs. Battery pack: Get a 4 in 1 Portable Transparent 5V2A Power Bank. Transparent: The full transparent design is adopted to display the precise structure inside the battery, including the equipped battery, circuit layout, battery capacity, and fully display the industrial technology aesthetics. Battery capacity: Choose from a 4500mAh and 6600mAh battery power bank capacity. Colours: Choose from black, white and yellow colour options.