This is simple Russian half-frame camera purposed for 35mm film.
It has metal body, so it is very durable and reliable camera.
I don't know why the shutter cock lever was moved to the bottom side of the camera - seems to be inconvenient.
Quite used condition, but all functions (film advance, shutter release, aperture value change) seems to work fine. Lens needs some cleaning. Small dend on the top front side. Quite dusty.
Also, bottom film rewind knob doesn't hold in the pressed state - it slides down. Not a big problem, but it is bit inconvenient, so it is better to fix it if you plan to use this camera.