Brand, Seller, or Collection Name:Casio Model number:EFR-526BK-1A1VUDF (EX206) Part Number:EFR-526BK-1A1VUDF (EX206) Item Shape:Round Dial window material type:Mineral Display Type:Analog Case material:Steel Case diameter:48.5 millimeters Case Thickness:11.60 Band Material:Stainless steel Band Color:Black Dial color:Black Calendar:Yes Special features:Chronograph Item weight:9.28 Ounces Movement:Quartz Water resistant depth:100 Meters