SchipsClock Vostok U-Boot Komandirskie Wall clock OFFICER The SHIP'S CLOCK "5-CHM" also called "SUB CLOCK" was originally produced by Wostok watchmakers for Soviet Navy's battleships and nuclear submarines. Even nowadays many russian ships and submarines are equipped with this watch. The mechanic movment features 12 jewels, with an anchor escapement and monometallic balance - it runs 8 days when fully winded. The dimensions of this impressive watch are diameter 22 cm (9.8 inches) and thickness 8 cm (3.14 inches) at a weight of 2,8 kilo. The aluminium case is splash-proof with anticorrosion coating. To set the time and to wind the watch with a key, you can open the front of the case. Delivered together with a key, holder, papers and papercase. Made in Russia.