This is a plastic battery box for four AA batteries. It is ideal for electronic projects, DIY, hobbies, science experiments, and more. It was found in my brother-in-law's toolbox. It appears to be a component taken from an electronic product. Operation has been confirmed (see photo 1). The interior is free of scratches and dirt, and is generally in good condition (please check the photos for the condition). 【Size (approx.)】 Length: 68mm Width: 70mm Thickness: 20mm The batteries, light bulb, and wiring used for the operation check are not included. Please understand that this is a used item that has been stored at home for a long time. Returns are not accepted.