Movement: Mechanical movement Movement Model: F6L24 Accuracy: +25 to -15 seconds per day * Power Reserve (Mechanical): 40 hours or more Automatic Winding: Manual Winding: Dial Color: White Case Material (Bezel): Stainless Steel Case Material (Case Body): Stainless Steel Case Material (Case Back): Stainless Steel Case Size (Width): 42.0 mm Case Size (Height): 49.5 mm Case Size (Thickness): 14.0 mm Case Back Specification: Transparent Crystal Material (Front): Spherical Sapphire Crystal Crystal Material (Back): Mineral Glass Strap Material: Leather Strap Color: Brown Strap Width: 21 Millimeters Clasp Type: Push-button triple folding clasp Strap Diameter: 140mm-200mm Water Resistance: Daily water resistant (50M) Antimagnetic Performance: JIS Class 1 (4800 A/m or higher) Weight: 84 grams Jewel Count: 22 stones Screw-down Case Back: Release Date: November 2017