Ultra-thin upgrade to 12.2mm, the latest fifth-generation Daytona, features genuine independent steel head links, with a new matte black carbon black replica version in 40mm high-end quality photography! This is a fully solid stainless steel Daytona! It uses an improved version of the latest movement, unlike the common 13.5mm cases on the market. It comes with an option of genuine leather strap, rubber strap, or stainless steel strap! Factory-equipped with an original storage box! Includes tools and a complete set of genuine head link straps! .Exciting details: .1. The new black stainless steel Daytona has three main changes: the rubber strap is upgraded with separate CNC-developed steel head links, which allows for freely interchangeable straps of the same size in the future! .2. The straps are made of silicone material or stainless steel options, with every case undergoing CNC processing for all details, followed by manual refinement, polishing, and meticulous quality inspection.3. The movement features a stable version of the Dandong Cal, the latest generation of the ultra-thin 7750 movement, synchronized with the chronograph function found in retail stores. The strap is equipped with an adjustable oyster-style safety buckle to prevent accidental opening. This elegant solid link strap is comfortable to wear and extremely easy to operate!.Factory package includes a BLAKEN modified storage box with tools and a genuine head link leather strap. Accessories lost are not eligible for return or exchange - a sincere creation. All watch enthusiasts are welcome to appreciate!