Model 2431/280988
The movement is a mechanical "Vostok 2431".
The number of jewels is 32.
24 mm caliber movement with a central second hand.
An instant calendar.
Time of day indication using the clock hand (24 hours).
Self-winding with a safety device against over-winding of the spring.
Frequency: 19800 half-vibrations/hour.
Case: stainless steel (case ring, time dial, crown, watch back cover).
The hour markers and hands are filled with fluorescent paint of variable action.
Organic glass.
Water protection: 20 atmospheres (200 meters).
Strap: nylon (ZULU), width 20 mm.
The energy reserve of one spring winding is at least 31 hours.
The average service life of the movement is 10 years.
Weight: 100 g .
Dimensions: 43.8 x 50.5 x 15 mm.