Rolex
Rolex Cosmograph Daytona 126508
“John Mayer (green dial)”
The Rolex Cosmograph Daytona (reference 126508) is a 40 mm 18k yellow gold watch. It runs on the automatic caliber 4131 with a 72-hour power reserve and is water resistant to 100 m. It was introduced in 2023 and is still in production.
Specifications
Case
- Reference
- 126508
- Nickname
- John Mayer (green dial)
- Collection
- Cosmograph Daytona
- Case size
- 40 mm
- Case material
- 18k yellow gold
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 100 m
- Bracelet / strap
- Oyster, 18k yellow gold bracelet
Dial and bezel
- Bezel
- 18k yellow gold tachymeter bezel
Movement
- Movement
- Automatic
- Caliber
- 4131
- Power reserve
- 72 hours
- Frequency
- 28,800 vph
- Functions
- Chronograph, Tachymeter
Production
- Production
- 2023 – today (current)
Dial versions
This reference was made with these dials and finishes.
126508 Black Intense black dial, champagne-colour counter rings
126508-0002
Intense black dial, champagne-colour counter rings
126508 Black Black dial, golden counter rings
126508-0004
Black dial, golden counter rings
126508 Black Bright black dial, golden counters, diamond-set hour markers
126508-0003
Bright black dial, golden counters, diamond-set hour markers · Diamond; hour markers on dial (count not published in fetched source)
126508 Golden Golden dial, black counter rings
126508-0005
Golden dial, black counter rings
126508 Golden Golden dial, bright black counter rings
126508-0006
Golden dial, bright black counter rings
126508 John Mayer 2.0
126508-0008
Green sunray dial · “John Mayer 2.0”
126508 White
126508-0001
White dial, golden counter rings
How it compares within the Cosmograph Daytona family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 126508 (This watch) | 40 mm | 18k yellow gold | — | 4131 | 2023– |
| 126500LN | 40 mm | Oystersteel | — | 4131 | 2023– |
| 126502 | 40 mm | Rolesium (Oystersteel/platinum) | White grand feu enamel | 4131 | 2026– |
| 126505 | 40 mm | 18k Everose gold | — | 4131 | 2023– |
| 126509 | 40 mm | 18k white gold | — | 4131 | 2023– |
| 126515LN | 40 mm | 18k Everose gold | — | 4131 | 2023– |
| 126519LN | 40 mm | 18k white gold | — | 4131 | 2023– |
| 126579RBR | 40 mm | 18k white gold, diamond-set | Black | 4131 | 2023– |
| 126598TBR | 40 mm | 18k yellow gold, diamond-set | Golden | 4131 | 2023– |
About the Cosmograph Daytona family
The Cosmograph Daytona arrived in 1963 with ref. 6239, a manual-wind chronograph with the tachymeter scale moved onto the bezel. Later vintage references such as the 6263 and 6265 added screw-down pushers. In 1988 the ref. 16520 introduced automatic winding with caliber 4030, based on a Zenith El Primero, and in 2000 the ref. 116520 moved to the in-house caliber 4130.
The ceramic-bezel steel ref. 116500LN followed in 2016, and the current generation, with references such as the 126500LN, uses caliber 4131. Gold versions on Oysterflex, such as the 126518LN in yellow gold and 126515LN in Everose, sit alongside white gold and platinum models. Dealers date a Daytona by reference, caliber, bezel material and dial details, and pay close attention to box, papers and the date on the warranty card.
Quick answers
- What size is the Rolex Cosmograph Daytona 126508?
- The Rolex Cosmograph Daytona 126508 has a 40 mm case.
- What movement does the Rolex Cosmograph Daytona 126508 use?
- It uses the automatic caliber 4131, with a 72-hour power reserve.
- How water resistant is the Rolex Cosmograph Daytona 126508?
- It is water resistant to 100 metres.
- Is the Rolex Cosmograph Daytona 126508 still in production?
- Yes, it is a current reference.
- When did the Rolex Cosmograph Daytona 126508 come out?
- It was introduced in 2023.
- What is the Rolex Cosmograph Daytona 126508 made of?
- The case is 18k yellow gold. Bracelet or strap: Oyster, 18k yellow gold bracelet.
- Which dials was the Rolex Cosmograph Daytona 126508 made with?
- The catalog lists 4 dials: Black, Golden, Green, White.
- What is the Rolex Cosmograph Daytona 126508 nicknamed?
- Dealers and collectors call it the “John Mayer (green dial)”.
Catalog facts checked October 2026.