BLK's latest Rolex Yacht-Master series, available in 40mm and 42mm, features a calendar that supports both forward and reverse adjustment! This model is equipped with the exclusive custom 3235 integrated movement, ensuring stable and reliable performance. Quality assurance is guaranteed.1. Case: The dimensions and thickness are consistent with the original, making it indistinguishable from market versions.2. Dial: Premium Swiss ice blue luminous material, with a delicate texture and accurate color matching; exceptional moonlight effect. The king of the night!.3. Glass: Sapphire crystal with a 2.5x magnifying effect, providing clarity; the font is clearer.4. Strap: Fluoroelastomer strap, perfectly fitting with the lugs for maximum comfort on the wrist. Order the welfare strap version to receive a complimentary pair of natural rubber straps; each detail reflects BLK's dedication to craftsmanship.5. First-class workmanship, identifiable by BLK's unique serial number and distinctive design. Quality assurance; a high-quality, premium product!