Invicta Black Skeleton Dial Fixed Blue and Silver-tone Band Watch # 18601 (Men Watch). Dial Color : Black Skeleton. Display Type : Analog. Item Shape : Round Shape. Band Material : Leather. Case Size Diameter : 52 millimetres. Band Width : 26 millimetres. Clasp Type : Buckle. Bezel Material : Fixed Blue and Silver-tone. Movement Type : Mechanical. Model Number:18601 1860 186 18.