The top version of modified and customized 5711 Nautilus is made of solid real gold and is custom-made with a mold (even if it is not worn, it can be sold as gold nuggets, with a high value preservation rate). The bezel and scale are made of natural grade colored gemstones, and the 18K gold rear rotor is made of ( Ace) Studio independently developed the highest version of the card-free movement P 1. 3D modeling of the splints and five-axis CNC carving. 2. The texture of the Swiss hand-polished process. 3. All splints are made of German silver. 4. Independent research and development without Card balance wheel. 5. Swiss hairspring, stable and accurate. 7. The best choice for high-end assembled watches. 8. Enjoy the same quality at one-tenth the price of genuine movements.