Log type 31

The Oyster Perpetual Datejust 31 in 18K yellow gold , with a diamond-set olive green dial and a President strap.

The dial features an oversized Roman numeral VI set with 11 diamonds. Many of the dial styles in the Oyster collection feature sunray effects that reflect an elegant sheen. This effect requires excellent brushing techniques to create engravings that expand from the center of the dial outwards.

The light is dispersed along the engraving, creating a subtle and unique effect, showing different luster with the movement of the wrist. After completing the solar light effect process, the dial will be colored by physical vapor deposition or electroplating technology, and finally decorated with varnish.

Gem-setting craftsmen, like sculptors, carefully craft the setting for each gemstone by hand using precious metals. Craftsmen set the gemstones with extremely precise skills. Each gemstone is precisely arranged and calibrated in its proper position, ensuring that it is firmly decorated on the gold or platinum setting.

In addition to paying attention to the quality of gemstones, Rolex also has other strict requirements for gemstone setting, including the height of the gemstones and their precise arrangement, direction and position, the regularity, solidity and proportion of the setting, and the exquisiteness of the metal setting. Surface Modification. The watch brings dazzling embellishment to the wearer's wrist.

Rolex has its own foundry to cast high-quality 18K gold alloy. By mixing different amounts of silver, copper, platinum or palladium, different types of 18K gold can be extracted: yellow gold, pink gold or white gold.

All raw materials are made from high-purity metals. Before the gold is formed, they must be carefully tested with advanced equipment in the self-operated laboratory. Each process is meticulous. The unremitting pursuit of excellence since the beginning of production is Rolex's consistent insistence.

Advanced technology is fully utilized in the design, development and production processes of Rolex watch straps and buckles, as well as the rigorous testing they must pass.

Like other components of the watch, the strap and buckle are also inspected by dedicated personnel to ensure that the product is beautiful and flawless. The President strap is equipped with three arched links, specially designed for the Oyster Perpetual Day-Date watch launched in 1956. Cast from carefully selected precious metals, this strap is both elegant and comfortable to wear.