Can be installed with 4 x flat 21700 lithium batteries (battery not included), and can be disassembled repeatedly. Intelligent LED large screen display allows you to check the remaining power status at any time. Features a high-strength outer shell with closely arranged components, offering a sleek design with advanced technological elements and a premium look. Made of high-quality materials, providing excellent durability and wear resistance. Equipped with a PD 20W fast charging output port, compatible with fast charging for various smartphones and tablets. Ports: USB Output x2, Type-C (output/input) x1, Fast Charging input x1 Note: Due to different product batches, the appearance may vary slightly, which does not affect functionality. Color: Black/Orange Material: Plastic + PC Package Contents: 1 x 21700 Power Bank Case Only the items listed above are included; other accessories are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.