Technical features of 2431 movement:
24 mm. caliber movement with central second hand.
„24-hour“ scala dial.
Date calendar of instant action.
Automatic movement with a safety device keeping the spring safe from overwinding.
Height 6,3 mm.
31 ruby Jewels.
Average daily rate: -10 … +20 sec.
Frequency: 19800 semi-oscillation per hour.
Totally wound movement run not jess than 31 hrs.
Average term 01 service: 10 years.
Coating of bridges and plates: nickel or chrome.
Coating of angrenage parts: chemical passivating or gold-cobalt.
Coating of screws: nickel, gold-cobalt. chemical bluing.
Vostok Watch Makers Inc.
Russian Federation, Republic of Tatarstan
422981, Chistopol, Engels str.