Iwc, Da Vinci, model: IW452306 Movement: Automatic Mechanical Case Diameter: 35.6×42.5mm Material: Stainless steel single case • Strap configuration: Original factory glossy deep blue alligator leather strap, pin buckle wear, formal and elegant style • Dial details: Deep brown radiating sunray dial, three-dimensional bar-shaped luminous hour markers; 3 o 'clock double-window large date display, 12 / 6 o 'clock Arabic numeral hour markers • Water resistance grade: 30 meters of water resistance for daily use, only suitable for daily water splashing, not suitable for wading through water Movement information Equipped with the IWC Cal.30110 automatic mechanical movement, featuring 21 gemstone bearings, a 42-hour power reserve, a frequency of 28,800 vibrations per hour, a solid case back design, and a plate with the brand's traditional finishing technique. Design traceability The Da Vinci collection is named after Leonardo Da Vinci. The barrel-shaped design is a classic and retro style from the 1990s. The radial guilloche dial is the signature feature of this model. The large date window is a classic and practical configuration for IWC dress watches, mainly for business formal wear.