Zenith Men's Captain Winsor Annual Calendar, 42 mm 18kt rose gold and diamonds case, 14 mm thickness, scratch resistant sapphire crystal, Screw-In Sapphire Crystal See-Through case back, power reserve 50 h, Pull and Push Crown, Dark Brown Leather Strap Over Rubber strap, 29 jewels, automatic movement, silver dial, water resistant to 30m/100ft.