The flashlight is a pocket “Bug”, a manual lever lighting device. The flashlight body is carbolite, consisting of two parts connected by screws. In the lower part there is a built—in metal lever handle, when pressed, a dynamo machine starts working, feeding light to the bulb in the front of the flashlight. On one side is the stamp of the factory “ZIP”, on the other “OST L12-40”.

A hand lantern is popularly called a bug for a loud buzzing sound during operation.

This is a small dynamo that generates energy from the constant impact of the handle on the internal mechanism of the flashlight. Accordingly, it does not require any batteries. Practically, a kind of “perpetual motion machine”. Inside such a lantern, a compact alternator is installed, which produces the energy we need for lighting.

Such an electrodynamic lamp was produced at the Krasnodar plant of measuring instruments “ZIP”, approximately in the late 1960s or early 1970s.