This is a 3D Printed power bank casing. The upper cap tight lock type. The circuit comes of single USB power bank circuit. This circuit is Type C charging port and USB dischareg port. Case colour can be varied. You can connect a 18650cell to make a power bank from this case. this case supports up to 3000 mah battery. The battery should be 18650 lithium ion cells. This is not spring Type case. you have to add solder the battery to circuit.
Item inlcude -
1 x Case
1 x Circuit