IWC Black Automatic Watch # IW452312 (Men Watch). Band Color : Black. Dial Color : Black. Display Type : Analog. Item Shape : Tonneau Shape. Band Material : Alligator Leather. Case Size Diameter : 35.6 millimetres. Case Material : Stainless Steel. Clasp Type : Tang. Bezel Material : Fixed. Bezel Function : Fixed. Crystal : Scratch Resistant Sapphire. Water Resistant Depth : 30 meters / 100 feet meters. Movement Type : Automatic. Calendar Type : Date. Model Number:IW452312 IW45231 IW4523 IW452.