Case: 47 mm Brushed Stainless Steel. Bezel: Unidirectionally Rotating with 60-Minute Elapsed Timing Scale. Exhibition Back with Sapphire Glass Caliber: Automatic Valjoux 7750, Incabloc, Glucydur Balance, Nivarox Alloy Hairspring Functions: Hours, Minutes, Subsidiary Seconds, Day and Date Chronograph: Hours, Minutes and Central Seconds Crown: 9 mm Knurled and Screw Down Crystal: Flat sapphire Glass with Anti-reflective Treatment on the Lower Side Water Resistant: 20 Atmospheres, 200 m/660 ft Dial: Black w/Orange Luminous Numerals Strap: Handmade Aviator Alligator