At 42mm the Rolex Explorer II is one of the largest cases currently produced by Rolex. The case is made out of 904L steel. The watch has a Sapphire crystal on the front and a solid case back on the rear, in classic Rolex style. The attractive bezel has a brushed finish and a modern looking font. One of the most visually enticing features of the Explorer II is the orange 24-hour hand and the orange "EXPLORER II" text printed on the dial. It stands out against the black dial, and catches the eye.