Case: 44 mm Polished Stainless Steel, Exhibition Back with Sapphire Glass Caliber: Automatic Valjoux 7751, Incabloc, Glucydur Balance, Nivarox Alloy Hairspring Functions: Hours, Minutes, Subsidiary Seconds, Day, Date, Month, 24 Hour Display and Phases of the Moon Chronograph: Hours, Minutes and Central Seconds Crown: Knurled, Double O-ring Sealed Crystal: Domed Sapphire Glass with Anti-Reflective Treatment on the Lower Side Water Resistant: 5 Atmospheres, 50 m/165 ft Dial: White w/Steel and White Luminous Applied Numerals Strap: Handmade Classic Alligator (22-20R-A.010)