Model 2403/581885 The movement is a mechanical "Vostok 2403". The number of jewels is 17. 24 mm caliber movement with a side second hand. Average daily running time: -20... +60 seconds per day. Frequency: 19800 half-vibrations/hour. The duration of the stroke from full winding of the spring is 38 hours. Case: brass watch case. Coating: chrome. Watch back cover: stainless steel. Glass: organic. Dust-proof. Genuine leather belt, 18 mm wide. The average service life of the movement is 10 years. Weight: 45 g. Dimensions: 38x45,2x11 mm.