Fortis Black Automatic Watch # 671.17.41-Si.20 (Men Watch). Band Color : Orange. Dial Color : Black. Display Type : Analog. Item Shape : Round Shape. Band Material : Rubber. Case Size Thickness : 16 millimetres. Case Size Diameter : 44 millimetres. Band Width : 20 millimetres. Case Material : Stainless Steel. Clasp Type : Fold Over with Safety Release. Bezel Material : Uni-directional Rotating. Bezel Function : Uni-directional Rotating. Crystal : Scratch Resistant Mineral. Water Resistant Depth : 200 meters / 660 feet meters. Movement Type : Automatic. Calendar Type : Day of the Week and Date. Model Number:671.17.41-Si.20 671.17.41-Si.2 671.17.41-Si. 671.17.41-Si.