Arsenal 1 Intelligent Camera Assistant

Arsenal is a hardware device that can plug into many DSLR or mirrorless cameras. Arsenal’s smart assistant AI suggests settings based on your subject and environment. It uses an advanced neural network to pick the optimal settings for any scene (using similar algorithms to those in self driving cars). It then lets you control the final shot.
Here's are the detailed guides on how to use it: https://support.witharsenal.com/en/collections/3270113-arsenal-1-quick-start-guide
Original price was ~CHF 200. The device is unused. The containing box has minor marks from stacking it between other devices.