Nintendo Game Boy Console Only (Defective)

Nintendo GAME BOY
This item is being listed at the request of a relative.
The power turns on, but I do not have any software to test its functionality.
There is yellowing, dirt, etc. Please check the photos.
The battery cover is broken, so it has been replaced with a different one and cannot be easily removed.
The batteries will be included when shipped.
This is a used item that has been stored at home for a long time. Please only purchase if you understand this.

Thank you for looking.