These cameras were produced by factory "KMZ" in Leningrad since 1960 till 1963. About 38,722 copies were made. It has selftimer and frame counter
Frame size 6x6cm
Film accepted type 120
Between lens shutter

Relative aperture - f/3.5
Focal length-75mm
Diaphragm -from 3.5 to 22

Shutter speeds - 1sec, 1/2, 1/4, 1/8, 1/15, 1/60, 1/125, 1/250, 1/500 and "B"