This is the Vostok Amphibia 120849 that was featured in my first video on this channel. In that first video, I showed how to replace the crown (and stem) of the watch.

History of Vostok Amphibia: https://en.wikipedia.org/wiki/Vostok_...

Non-affiliated links
Watch: https://meranom.com/en/amphibian-clas...
Strap: https://meranom.com/en/amphibian-clas...

Affiliated links
Blue tropic strap: https://s.click.aliexpress.com/e/_AtdOYN
Waffle straps: https://s.click.aliexpress.com/e/_AbaGVr
Diamond waffle straps: https://s.click.aliexpress.com/e/_9G0TbB

History of Vostok: https://www.hodinkee.com/articles/vos...

Before y'all come at me with pitch forks and hate comments, I quote:
"Of course Switzerland was capable of producing watches with such specifications, but according to Novikov (here, as paraphrased by Google translate), “many [Swiss] designs we could not repeat, because our equipment can not provide the necessary accuracy.” If the quality of the machines available in Russia meant that copying the techniques of the Swiss were out of the question, then Novikov and Belov would have to approach the problem differently altogether. "