Model 2415.01/650856 The movement is 2415.01. The number of jewels is 31. 24 mm caliber movement with a central second hand. Self-winding with a safety device against over-winding of the spring. 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 31 hours. Case: stainless steel (case, time dial, crown, back cover of the watch). Organic glass. Stainless steel bracelet, 20 mm wide. Tightness: 200 m. The average service life of the movement is 10 years. Weight: 151 Dimensions: 41.6 x 49.6 x 15 mm.