Battery case for 2032 batteries. Needs 2 paperclips, 2 m3 nuts and 2 m3x5. The hole for the paperclip is around 2mm. I currently not have pics of it for the assembly. I glued it on a welding helmet so I can change the batteries easier if needed. There is a notch on the body so you can remove the battery easier using a flat end screwdriver.
The author hasn't provided the model origin yet.