Very rare diving watches antimagnetic brass housing with nickel plated. Clock mechanism, collected on 17 ruby jewels, hermetically disposed inside the watch case, thick polished glass which is further protected by impact-resistant grille. Winding the crown clockwork effectively protected by a threaded valve seal, which reliably provides water-resistant to a depth of immersion device 700 meters. Dial feature in its phosphor performance by which clocks are glowing in the dark background environment finding that provides free determination of the time value in the medium deep sea diving. The size of the watch 55h65 mm.