Audemars Piguet Royal Oak 15400 series original 1-1 mold opening, 4 major technological breakthroughs [1] The case is white and flawless, the lines are clear and smooth, the case is only 10mm thick [2] The difficulty of the sandwich case is that each octagonal edge

line is On a parallel line, every angle is built according to the original version 1-1. The grooves of the eight screws on the bezel are parallel to the edge of the octagonal bezel, making them bright and eye-catching

[3] Huangjia Oak’s “decreasing” link structure. The size of each link is different, and each link needs to be carefully polished and assembled by hand. The buckle is finally consistent with the original version, and each of the bright fonts on a gray background is so dazzling.

[4] The Royal Oak dial is decorated with the iconic "tapisserie" grid pattern, which may seem simple but has amazing details. It has been lathe-carved, polished and colored