Model 2416/13024A The movement is a mechanical "Vostok 2416". The number of jewels is 31. Self-winding with a safety device against over-winding of the spring. The central second hand. An instant calendar. Shockproof device of the balance node. Case: stainless steel (case ring, time dial, crown, watch back cover). The hour markers and hands are filled with fluorescent paint of variable action. The strap is made of polyurethane, 20 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: 89 g. Dimensions: 43.8 x 49.3 x 15 mm.