The watch is fitted with a 17 jewels movement, a caliber ChK-28. It is a column wheel chronograph movement with no summation function. Its only button, located at one, starts, stops and resets the chronograph. This was the first chronograph movement designed in the Soviet Union after WWII.
It has a beautiful and simple dial with no markings with the exception of the small factory identification under six.
It has two back covers both of them made of stainless steel.
The backcase. Still with its protective painting:
Movement picture (seller's pic):
The place:
