Rolex
Rolex Datejust 31 278285RBR
The Rolex Datejust 31 (reference 278285RBR) is a 31 mm 18 kt Everose gold watch. It runs on the automatic caliber 2236 with a 55-hour power reserve and is water resistant to 100 m.
Specifications
Case
- Reference
- 278285RBR
- Collection
- Datejust
- Case size
- 31 mm
- Case material
- 18 kt Everose gold
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 100 m
- Bracelet / strap
- 18 kt Everose gold
Dial and bezel
- Bezel
- Diamond-set
Movement
- Movement
- Automatic
- Caliber
- 2236
- Power reserve
- 55 hours
- Frequency
- 28,800 vph
- Functions
- Date
Production
- Production
- Current
Dial versions
This reference was made with these dials and finishes.
278285RBR Brown Chocolate #0006
278285RBR-0006
Chocolate; Diamond-set · Diamond, Bezel, count not published; Diamond, Dial (indexes/hour markers), count not published
278285RBR Brown Chocolate #0016
278285RBR-0016
Chocolate; Diamond-set; Large VI · Diamond, Bezel, count not published; Diamond, Dial (large VI numeral), 11 stones
278285RBR Grey
278285RBR-0027
Slate; Diamond-set; Large VI · Diamond, Bezel, count not published; Diamond, Dial (large VI numeral), 11 stones
278285RBR Pink Rose colour #0018
278285RBR-0018
Rose colour; Sunray · Diamond, Bezel, count not published
278285RBR Pink Rose colour #0025
278285RBR-0025
Rose colour; Diamond-set · Diamond, Bezel, count not published; Diamond, Dial (indexes/hour markers), count not published
278285RBR Purple
278285RBR-0023
Aubergine; Diamond-set; Large VI · Diamond, Bezel, count not published; Diamond, Dial (large VI numeral), 11 stones
278285RBR Silver
278285RBR-0030
Diamond-set · Diamond, Bezel, count not published; Diamond, Dial (indexes/hour markers), count not published
278285RBR White
278285RBR-0005
Mother-of-pearl; Diamond-set · Diamond, Bezel, count not published; Diamond, Dial (indexes/hour markers), count not published
How it compares within the Datejust family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 278285RBR (This watch) | 31 mm | 18 kt Everose gold | — | 2236 | — |
| 126200 | 36 mm | Oystersteel | — | 3235 | 2018– |
| 126233 | 36 mm | Yellow Rolesor (Oystersteel/18k yellow gold) | — | 3235 | 2018– |
| 126234 | 36 mm | White Rolesor (Oystersteel/18k white gold) | — | 3235 | 2018– |
| 126300 | 41 mm | Oystersteel | — | 3235 | 2017– |
| 126331 | 41 mm | Everose Rolesor (Oystersteel/18k Everose gold) | — | 3235 | 2017– |
| 126333 | 41 mm | Yellow Rolesor (Oystersteel/18k yellow gold) | Champagne / Black / Silver / Blue / Wimbledon slate / various | 3235 | 2017– |
| 126334 | 41 mm | White Rolesor (Oystersteel/18k white gold) | — | 3235 | 2017– |
| 278278 | 31 mm | 18 kt yellow gold | — | 2236 | — |
About the Datejust family
The Datejust appeared in 1945 as the first self-winding wristwatch to show the date in a window, together with the Jubilee bracelet designed for it. The Cyclops magnifier over the date followed in the 1950s, and the combination of fluted bezel, date window and Jubilee bracelet has stayed the model's signature ever since.
The catalog covers several generations, from caliber 3135 references to the current 3235 models: the Datejust 41, such as refs. 126300, 126331 and 126333, and the Datejust 36, such as refs. 126200, 126233 and 126234. Variants combine steel, Rolesor and gold with smooth or fluted bezels, Oyster or Jubilee bracelets and a very wide choice of dials. For dealers the exact dial, bezel and bracelet combination is what separates otherwise similar watches, so they are always described together.
Quick answers
- What size is the Rolex Datejust 31 278285RBR?
- The Rolex Datejust 31 278285RBR has a 31 mm case.
- What movement does the Rolex Datejust 31 278285RBR use?
- It uses the automatic caliber 2236, with a 55-hour power reserve.
- How water resistant is the Rolex Datejust 31 278285RBR?
- It is water resistant to 100 metres.
- Is the Rolex Datejust 31 278285RBR still in production?
- Yes, it is a current reference.
- What is the Rolex Datejust 31 278285RBR made of?
- The case is 18 kt Everose gold. Bracelet or strap: 18 kt Everose gold.
- Which dials was the Rolex Datejust 31 278285RBR made with?
- The catalog lists 6 dials: Brown, Grey, Pink, Purple, Silver, White.
Catalog facts checked October 2026.