Features: Stainless Steel Case Leather Strap Automatic Movement Caliber: F6724 22 Jewels Mineral Crystal Black Dial Analog Display 21,600 Vibrations/Hour Power Reserve Upto 40 Hours Date Display See Through Case Back Buckle Clasp 30m Water Resistance Approximate Case Diameter: 38mm Approximate Case Thickness: 12.5mm Approximate Lug Width: 20mm Alternate Model Numbers: RA-AC0M02B, RA-AC0M02B10B, RA-AC0M02B30B