Quick answer
The Rolex Daytona 116508 is a 40 mm chronograph in 18k yellow gold with the calibre 4130 movement and a 72-hour power reserve. Replica versions copy the case shape, dial layout and bracelet style. They use steel with gold plating and a third-party movement, not Rolex gold or a Rolex calibre. Selling or importing a counterfeit is illegal in the US. Customs can seize a shipment, and Rolex will not service the watch.
Genuine 116508 specs
- Case: 40 mm, 18k yellow gold, screw-down pushers, Triplock crown, 100 m water resistance.
- Movement: calibre 4130, automatic, column wheel, vertical clutch, 72-hour power reserve, COSC chronometer certification.
- Dial: three sub-dials at 3, 6 and 9 o'clock. The green sunburst dial earned the nickname John Mayer Daytona.
- Bezel: fixed yellow gold with a tachymeter scale.
- Bracelet: yellow gold Oyster with an Oysterlock clasp.
- Weight: about 190 g with a full bracelet. A steel Daytona weighs about 140 g.
- Introduced in 2016.
Where replicas differ
Metal and weight
Most replica 116508 cases are 316L or 904L steel with gold plating. Sellers quote plating thickness in microns. Common claims run from 3 to 15 microns. A gold wrapped case adds a thicker layer than standard PVD. Plated steel weighs less than solid gold. A replica in the 145 to 160 g range is normal. Gold plate wears first at the clasp edges, the caseback and the crown guards.
Movement
Two movement families show up in replica Daytonas. Asian 7750 chronographs are cheap and widespread, with a shorter power reserve and a different pusher feel. Clone 4130 movements, sold under names such as SH4130 or Dandong 4130, copy the column wheel layout and add reserve time. Neither is a Rolex movement, and neither carries COSC certification.
Dial and crystal
Green sunburst dials vary by batch. Tone, sunray brushing and print thickness differ between makers. The etched Rolex crown at 6 o'clock on the crystal appears on some replicas and not on others. Bezel engraving depth varies, and the tachymeter numerals on low-cost builds sit shallow.
Water resistance
The genuine 116508 is rated to 100 m. Replica listings often claim 30 m or 50 m. Gaskets are not pressure tested at the factory level, so swimming with a replica puts the movement at risk.
Checklist for a replica listing
- Case metal named as 316L or 904L steel, with plating thickness in microns.
- Movement named by factory or code, not just Swiss movement.
- Weight stated in grams.
- Case diameter and lug width in millimeters.
- Return window and payment terms in writing.
Legal status in the US
18 U.S.C. 2320 sets federal penalties for trafficking in counterfeit goods. A first offense carries up to 10 years in prison and a $2 million fine for an individual. 19 U.S.C. 1526 allows CBP to seize and destroy counterfeit imports. Rolex owns trademarks on the name, the crown logo and dial elements, and the company files civil suits against sellers. Buyers see seizure of the package more often than prosecution.
Service and resale
Rolex service centers refuse counterfeit watches. Independent watchmakers can service an Asian 7750 or a clone 4130, but parts supply is thin and repair cost can pass the price of the watch. Resale value for a replica is near zero. There is no collector market for counterfeit Daytonas and no manufacturer warranty.