Model 2431/17004B
The movement is a mechanical "Vostok 2431".
The number of jewels is 32.
Self-winding with a safety device against over-winding of the spring.
An instant calendar.
Time of day indication using the clockwise hand.
The central second hand.
Shockproof device of the balance node.
Case: stainless steel (case ring, time dial, crown, watch back cover).
The hour signs, numbers, and hands are filled with alternating fluorescent paint.
All-metal stainless steel bracelet, 22 mm wide.
Organic glass.
Water protection: 20 atmospheres (200 meters).
The energy reserve of one spring winding is at least 31 hours.
Average daily running time: -20... +60 seconds per day.
The average service life of the movement is 10 years.
Weight: 132
Dimensions: 41.8 x 46.1 x 15 mm.
