Rolex Cosmograph Daytona M116509 Blue Dial

Building a convincing 1:1 edition of the Rolex Cosmograph Daytona M116509 Blue Dial comes down to two things: case metallurgy and movement geometry. Clean / VS Factory mills the chassis from solid Solid 904L Oystersteel (Satin & Mirror Finished) (40MM × 12.2mm (1:1 Case Profile)) and fits the regulated Dandong DD4130 / SH4131 Integrated Chronograph automatic movement delivering 72-Hour Extended Reserve (28,800 vph).

Metallurgy, Crystal Clarity & Wrist Balance

Every external contact point, from the milled folding clasp safety catch to the knurled winding crown and bezel teeth, carries the tactile resistance expected of a Geneva timepiece. We inspect the dial printing, hand alignment, and sapphire gasket seating on every single unit before it ever reaches the shipping desk.

Pre-Shipment Studio Inspection & 3-Year Warranty

We never ship blind from a warehouse shelf. Within 48 hours of ordering the Rolex Cosmograph Daytona M116509 Blue Dial (Ref. SW-21881), our watchmakers film your watch running live on the timegrapher and pressure tester so you can verify dial alignment, amplitude, and beat error firsthand. Once approved, it dispatches via customs-cleared express courier with a 3-year mechanical warranty.