Features: Stainless Steel Case Leather Strap Mechanical Movement Caliber: H-50 Sapphire Crystal Black Dial Analog Display Power Reserve Up To 80 Hours Luminous Hands And Markers 12/24 Hours Display Power Reserve Pull/Push Crown See Through Case Back Buckle Clasp 50M Water Resistance Approximate Case Diameter: 38mm Approximate Case Thickness: 10mm Approximate Lug width: 20mm