Brand, Seller, or Collection Name:Casio Model number:B640WB-1BEF Part Number:B640WB-1BEF Model Year:2011 Item Shape:Round Dial window material type:Acrylic Display Type:Analog Clasp:Fold-over-clasp Case diameter:38 millimeters Case Thickness:9 millimeters Band Material:Stainless steel Band length:men Band width:18 millimeters Band Color:Black Dial color:Grey Bezel material:Resin Calendar:Day, date, and month Special features:N/A Item weight:1.60 Ounces Movement:Quartz Water resistant depth:50 Meters