IWC Black Hand Wind Watch # IW510205 (Men Watch). Band Color : Black. Dial Color : Black. Display Type : Analog. Item Shape : Round Shape. Band Material : Alligator Leather. Case Size Diameter : 43 millimetres. Case Material : Stainless Steel. Bezel Material : Fixed. Bezel Function : Fixed. Crystal : Scratch Resistant Sapphire. Water Resistant Depth : 30 meters / 100 feet meters. Movement Type : Hand Wind. Calendar Type : Date. Model Number:IW510205 IW51020 IW5102 IW510.