Rolex Cosmograph Daytona 116509 Black Dial

Under a watchmaker’s loupe, the Rolex Cosmograph Daytona 116509 Black Dial from Clean / VS Factory holds its own where ordinary replicas fail: rehaut serial alignment, dial sunburst grain, and correct pinion height. Powered by the Dandong DD4130 / SH4131 Integrated Chronograph (72-Hour Extended Reserve (28,800 vph)), it maintains a true 4Hz beat rate inside a 40MM × 12.2mm (1:1 Case Profile) case forged from Solid 904L Oystersteel (Satin & Mirror Finished).

How Clean / VS Factory Machines This Reference

Both sides of the synthetic sapphire crystal are diamond-polished and AR-coated to keep glare off the hands. Checking the crisp click of the clasp blades or the smooth winding action of the mainspring barrel confirms that the mechanical execution is tight and deliberate.

What Happens on Our Bench Before Dispatch

Every Rolex Cosmograph Daytona 116509 Black Dial goes through our three-stage Geneva bench check within 24–48 hours of your order: first, a 5-position digital timegrapher calibration (+/- 2s/day); second, a dry vacuum pressure test on the case seals; and third, a macro video inspection sent directly to your WhatsApp or email for sign-off. Your shipment travels via insured triangular express air freight with a 100% customs pass guarantee and our 3-year mechanical warranty.