Dial diameter: 44 mm, 904L stainless steel. Monocoque midshell. Screw-down case back and winding crown. Rolex ring lock system housing architecture with helium escape valve. Unidirectional rotatable 60-minute scale. Ceramic scratch-resistant porcelain insert. Platinum-coated numerals and graduations. Tighten. Triple interlocking triple waterproof system. Domed scratch-resistant sapphire crystal. Self-winding movement. Functions: central hours, minutes and seconds. Power reserve: 70 hours. Oyster flat three-piece link bracelet. Folding Oysterlock Clasp with Rolex Sliding Lock Extension System.