BT’s Masterpiece of Craftsmanship: Zheng Dan Dong 4130 Movement Rainbow Daytona

The king among Rolex Daytonas — the Rainbow Bezel Daytona series. The bezel of this rainbow Daytona is set with 36 gradient-colored gemstones. Since natural gems often contain minor imperfections, BT Factory selects only optimized stones to achieve a pure, brilliant, and richly saturated appearance, significantly increasing the complexity of production. As a result, this timepiece is currently produced only in limited quantities.

The dial features square-cut rainbow-gradient gemstone hour markers or high-grade moissanite. The three chronograph sub-dials utilize a special technique called ‘Gold Crystals,’ combining gold, silver, and various metal elements. This creates a dial surface exhibiting a Widmanstätten pattern, resembling the layered structure of iron-nickel meteorites. When the watch is moved, the irregular patterns on the ‘Gold Crystals’ refract light dynamically, producing shifting highlights and shadows with a deep, mesmerizing effect.

A rainbow is nature’s magnificent gift to humanity. BT honors its commitment to excellence by crafting a harmonious symphony of colors, defining the essence of the Rainbow Daytona.