Brand: Invicta Model number: 1931 Part Number: 1931 Model Year: 2011 Item Shape: Round Dial window material type : Flame-Fusion Display Type: Analog Clasp: Fold-Over Clasp with Safety Case material: Stainless steel Case diameter: 48 millimeters Case Thickness: 14 millimeters Band Material: Polyurethane Band length: Men's Standard Band width: 26 millimeters Band Color: Black Dial color: Black Bezel material: Stainless steel Bezel function : tachymeter Calendar : Date Movement : Japanese quartz