steelDimensions: disc diameter: 34 mmStainless steel, hessalite glass with magnifying glass on index no. 3, Ref: 1501, automatic-winding mechanism cal. 1560, individual no. 1207648, signed on the dial: 'ROLEX OYSTER PERPETUAL DATE', 'SUPERLATIVE CHRONOMETER OFFICIALLY CERTIFIED', round envelope dia: 34 mm, bracelet length adjustableBiogram021_1