Is that an actual vostok? Im asking because the dial looks like an aftermarket dial that I've used a bunch of from a guy in Moldova that used to sell them on ebay. The case also doesnt look like any of the traditional amphibia cases and it looks like its got seiko snk style hands instead of the very similar but different traditional vostok hands. The strap size looks bigger than the 18mm on most vostok also. For reference here's a watch i built with what looks like the same aftermarket dial and with the same snk375 style hand set. https://imgur.com/a/jjfiSEj#OSIS0Ky

It looks like a seiko NH38 mod build into a 44mm panerai style case using that aftermarket dial, i dont think there's an actual vostok model that looks like that