Sapphire Crystal Case Diameter: 42mm Case Thickness: 13mm Case: Stainless Steel Strap: Genuine Leather Buckle: Butterfly Deployment Movement: 25 Jewels Swiss Made Valjoux 7750, Swiss-automatic Waterproof 10 ATM Special Features: Limited Edition 49pcs, Glassback, Day Date, Flyback Chronograph Collection: men Color: Black Display: Analog CO: Made in Switzerland