Features: Stainless Steel Case Leather Strap Automatic Movement Caliber: F6D22 21 Jewels Mineral Crystal Black Dial Analog Display Power Reserve Multi Year Calendar Day, Date And Month Display See Through Case Back Deployment Clasp 50m Water Resistance Approximate Case Diameter: 43mm Approximate Case Thickness: 11mm Approximate Lug Width: 22mm Alternate Model Numbers: RA-BA0006B,RA-BA0006B10B,RA-BA0006B30B