Rolex
Rolex Day-Date 40 228398TBR
The Rolex Day-Date 40 (reference 228398TBR) is a 40 mm 18k yellow gold watch. It runs on the automatic caliber 3255 with a 70-hour power reserve and is water resistant to 100 m.
Specifications
Case
- Reference
- 228398TBR
- Collection
- Day-Date
- Case size
- 40 mm
- Case material
- 18k yellow gold
- Crystal
- Sapphire
- Water resistance
- 100 m
- Bracelet / strap
- 18k yellow gold
Dial and bezel
- Bezel
- Baguette-cut diamond-set (18k yellow gold)
Movement
- Movement
- Automatic
- Caliber
- 3255
- Power reserve
- 70 hours
- Frequency
- 28,800 vph
- Jewels
- 31
- Functions
- Date, Day
Dial versions
This reference was made with these dials and finishes.
228398TBR Black Baguette-cut diamond indexes
228398TBR-0001
Baguette-cut diamond indexes · Diamond; Baguette; Bezel; count/carats not published in source; Diamond; Baguette; Dial indexes; count/carats not published in source
228398TBR Black
228398TBR-0004
Black · Diamond; Baguette; Bezel; count/carats not published in source
228398TBR Black Onyx
228398TBR-0038
Onyx · Diamond; Baguette; Bezel; count/carats not published in source
228398TBR Champagne
228398TBR-0007
Champagne · Diamond; Baguette; Bezel; count/carats not published in source
228398TBR Champagne Roman numerals
228398TBR-0003
Roman numerals · Diamond; Baguette; Bezel; count/carats not published in source
228398TBR Champagne Baguette-cut diamond indexes
228398TBR-0002
Baguette-cut diamond indexes · Diamond; Baguette; Bezel; count/carats not published in source; Diamond; Baguette; Dial indexes; count/carats not published in source
228398TBR Diamond-paved
228398TBR-0036
Paved diamond dial · Diamond; Baguette; Bezel; count/carats not published in source; Diamond; Dial (paved); count/carats not published in source
228398TBR Green Roman numerals
228398TBR-0039
Roman numerals · Diamond; Baguette; Bezel; count/carats not published in source
228398TBR Green Ombre
228398TBR-0042
Ombre · Diamond; Baguette; Bezel; count/carats not published in source
228398TBR Mother-of-Pearl
228398TBR-0043
Mother-of-pearl; Baguette-cut diamond indexes · Diamond; Baguette; Bezel; count/carats not published in source; Diamond; Baguette; Dial indexes; count/carats not published in source
228398TBR Silver Roman numerals
228398TBR-0006
Roman numerals · Diamond; Baguette; Bezel; count/carats not published in source
228398TBR Silver
228398TBR-0005
Silver · Diamond; Baguette; Bezel; count/carats not published in source
228398TBR White
228398TBR-0033
Roman numerals · Diamond; Baguette; Bezel; count/carats not published in source
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 |
|---|---|---|---|---|---|
| 228398TBR (This watch) | 40 mm | 18k yellow gold | — | 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 228398TBR?
- The Rolex Day-Date 40 228398TBR has a 40 mm case.
- What movement does the Rolex Day-Date 40 228398TBR use?
- It uses the automatic caliber 3255, with a 70-hour power reserve.
- How water resistant is the Rolex Day-Date 40 228398TBR?
- It is water resistant to 100 metres.
- What is the Rolex Day-Date 40 228398TBR made of?
- The case is 18k yellow gold. Bracelet or strap: 18k yellow gold.
- Which dials was the Rolex Day-Date 40 228398TBR made with?
- The catalog lists 7 dials: Black, Champagne, Diamond-paved, Green, Mother-of-Pearl, Silver, White.
Catalog facts checked October 2026.