Fortis Black Automatic Watch # 597.11.11-LF (Men Watch). Band Color : Black. Dial Color : Black. Display Type : Analog. Item Shape : Round Shape. Band Material : Leather. Case Size Thickness : 15 millimetres. Case Size Diameter : 40 millimetres. Case Material : Stainless Steel. Clasp Type : Tang. Bezel Material : Fixed Stainless Steel. Bezel Function : Fixed Stainless Steel. Crystal : Scratch Resistant Sapphire. Water Resistant Depth : 100 meters / 330 feet meters. Movement Type : Automatic. Calendar Type : Day of the Week and Date. Model Number:597.11.11-LF 597.11.11-L 597.11.11- 597.11.11.