This is an awesome Russian made stopwatch, the SLAVA brand. This stopwatch is well made, it is large, solid and heavy. The body is finished in a mirror-polished chrome.
The movement has 20 jewels (rubies).
The instrument has two second arms and one minute arm and allows to time two events (split time).
It was made at the 2nd Moscow Watch Factory – one of the leading watchmakers of the [former] Soviet Union. I do not know its exact age, it was made in the mid 80’s