This is a nice vintage Vostok Komandirskie mechanical watch from ca. 1980's with a 17 jewels Vostok 2414A caliber. It has a beautiful Russian T34 tank on the dial. The company was appointed an official supplier of watches for the Ministry of Defence of the Soviet Union in 1965. This year also marks the creation of the well known Komandirskie ("Commander's") watch. The experience gained through development of the army watch led to the Amphibia, a stainless-steel diving watch able to withstand a 200-metre depth (20atm).
The specifications of the Vostok Cal. 2414A; here.
If you want to read more about the history of Vostok; here.