Control Display Unit (CDU) in fair condition, previously repaired by GE Aviation.
The CDU is used to setup and control the flight route and other key data. The buttons all press as normal, but the screen has not been powered to test (28V screen, and 5V backlighting) and is therefore sold as seen. Any attempts to restore power should be carried out by a professional.
It would make an excellent addition to your flight simulator project.