Caliber No. Y513 Movement Mechanical (automatic winding + manual winding) Accuracy -5 to +10 seconds per day Power Reserve Approx. 42 hours (when fully wound) Weight 101g Thickness 14.0mm Case Size Width 42.0mm Case Material Stainless Steel Band Alligator Leather Triple-Fold Push-Type Clasp Band Width 21.0mm Adjustable Band Size 142–192mm Glass Dual Curved Sapphire Crystal (Clarity Coating) Water Resistance Water Resistant for Daily Use Design Features Lacquered Dial (Electroforming + Lacquer + Mother-of-Pearl Inlay) Screw-down See-Through Sapphire Crystal Back (Anti-Reflective Coating) Functions Seconds Hand Stop Function Vibration Frequency: 28,800 vph Jewels: 25 jewels Power Reserve Indicator Big Date Display Date Quick-Set Function Country of Origin Swiss Movement, Japanese Assembly