Rolex
Rolex Day-Date 40 228236
The Rolex Day-Date 40 (reference 228236) is a 40 mm 950 platinum watch. It runs on the automatic caliber 3255 with a 70-hour power reserve and is water resistant to 100 m.
Specifications
Case
- Reference
- 228236
- Collection
- Day-Date
- Case size
- 40 mm
- Case material
- 950 platinum
- Crystal
- Sapphire
- Water resistance
- 100 m
- Bracelet / strap
- 950 platinum
Dial and bezel
- Bezel
- Fluted (platinum)
Movement
- Movement
- Automatic
- Caliber
- 3255
- Power reserve
- 70 hours
- Frequency
- 28,800 vph
- Jewels
- 31
- Functions
- Date, Day
Production
- Production
- Current
Dial versions
This reference was made with these dials and finishes.
228236 Black Baguette-cut diamond indexes
228236-0004
Baguette-cut diamond indexes · Diamond; Baguette; Dial indexes; count/carats not published in source
228236 Black
228236-0003
Black
228236 Blue Roman numerals
228236-0007
Roman numerals
228236 Blue Ombre
228236-0024
Ombre
228236 Diamond-paved
228236-0009
Paved diamond dial · Diamond; Dial (paved); count/carats not published in source
228236 Green
228236-0008
Roman numerals
228236 Ice Blue
228236-0018
Ice Blue · “Ice Blue”
228236 Ice Blue Baguette-cut diamond indexes
228236-0006
Baguette-cut diamond indexes · Diamond; Baguette; Dial indexes; count/carats not published in source · “Ice Blue”
228236 Ice Blue Roman numerals
228236-0012
Roman numerals · “Ice Blue”
228236 Meteorite
228236-0011
Meteorite
228236 Mother-of-Pearl
228236-0026
Mother-of-pearl; Baguette-cut diamond indexes · Diamond; Baguette; Dial indexes; count/carats not published in source
228236 Silver
228236-0002
Baguette-cut diamond indexes · Diamond; Baguette; Dial indexes; count/carats not published in source
228236 Slate
228236-0013
Slate
228236 White
228236-0010
Roman numerals
How it compares within the Day-Date family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 228236 (This watch) | 40 mm | 950 platinum | — | 3255 | — |
| 128235 | 36 mm | 18k Everose gold | Chocolate / Sundust / various | 3255 | 2019– |
| 128238 | 36 mm | 18k yellow gold | Champagne / Green / Silver / various | 3255 | 2019– |
| 128239 | 36 mm | 18k white gold | — | 3255 | 2019– |
| 128396TBR | 36 mm | Platinum | — | 3255 | — |
| 228206 | 40 mm | 950 platinum | Ice blue | 3255 | 2015– |
| 228235 | 40 mm | 18k Everose gold | — | 3255 | 2015– |
| 228238 | 40 mm | 18k yellow gold | — | 3255 | 2015– |
| 228239 | 40 mm | 18k white gold | — | 3255 | 2015– |
About the Day-Date family
The Day-Date was introduced in 1956 as the first wristwatch to show the day of the week spelled out in full, in a window at 12 o'clock, alongside the date. It has only ever been made in precious metal, 18k gold or platinum, and is usually worn on the President bracelet created for it.
Generations are told apart by reference and movement: the quickset references of the late 1970s and 1980s, the 18238 and 118238 with caliber 3155, then the Day-Date 40 (for example ref. 228238) from 2015 and the Day-Date 36 (for example ref. 128238) from 2019, both with caliber 3255. Dials range from plain colours to stone, meteorite and diamond-set versions, and the day disc can be in many languages. Dealers check that dial, bezel and bracelet are original to the watch.
Quick answers
- What size is the Rolex Day-Date 40 228236?
- The Rolex Day-Date 40 228236 has a 40 mm case.
- What movement does the Rolex Day-Date 40 228236 use?
- It uses the automatic caliber 3255, with a 70-hour power reserve.
- How water resistant is the Rolex Day-Date 40 228236?
- It is water resistant to 100 metres.
- Is the Rolex Day-Date 40 228236 still in production?
- Yes, it is a current reference.
- What is the Rolex Day-Date 40 228236 made of?
- The case is 950 platinum. Bracelet or strap: 950 platinum.
- Which dials was the Rolex Day-Date 40 228236 made with?
- The catalog lists 10 dials: Black, Blue, Diamond-paved, Green, Ice Blue, Meteorite, Mother-of-Pearl, Silver and more.
Catalog facts checked October 2026.