equipped with a newly modified 4130 movement. Through precise disassembly, skeletonization, and high-end polishing techniques, the main plate, bridge, and mainspring barrel are perfectly revealed, achieving an exquisite skeletonized design that fully showcases the mechanical structure, blending luxury and sportiness. Product Details ✅ Movement: Upgraded modified 4130 movement, individually disassembled, skeletonized, chamfered, and polished with exceptional craftsmanship. ✅ Skeletonized Design: The mainspring barrel, main plate, and bridges undergo precision cutting and polishing, fully exposing the mechanical structure for outstanding aesthetics. ✅ Bezel: Available in ceramic bezel and carbon fiber bezel options, offering durability and a lightweight feel. ✅ Case Material: 904L stainless steel + imported NTPT carbon fiber, designed for ultra-lightweight comfort. ✅ Crystal: Dual sapphire crystal (front and back), providing superior scratch resistance and high transparency for long-lasting clarity.