Limited Edition Small Seconds Swiss Made Mechanical Movement Calibre AN0731S obtained from FHF 264 produced in 1953 and modified in 2017 - 17 Jewels - 36 hour power reserve - 18,000 vibrations per hour.Manual winding with Hours, Minutes & Small Seconds functions - Small Seconds at 6 O'Clock - Silver Hour, Minute and Seconds HandsBlue Guilloche Dial with Skeletonized Pattern - Silver Stainless Steel Hour Markers.43mm X 10.5mm Stainless Steel 316L Case - Antiglare Treated Sapphire Crystal - Sapphire Crystal in the See-Through Screwed Back.18 cm x 22/18 mm Blue Alligator-Embossed Calf Strap with Stainless Steel Deployment Buckle Water Resistant 100M 10ATM - Swiss MadeLimited to 300 pieces in Total