Shown: reference 278241-0018
Rolex

Datejust 31 278241 Reference 278241-0018

Datejust 31

Overview

The Rolex Datejust 31 278241 has a 31 mm Everose Rolesor (Oystersteel and Everose gold) case. It runs on the self-winding Rolex calibre 2236 with a 55 hour power reserve and is water resistant to 100 metres. The model has one reference, 278241-0018. The watch is supplied on a Jubilee bracelet.

Rolex introduced the Datejust in 1945 to mark the company's 40th anniversary. About the Rolex Datejust

Case diameter
31 mm
Movement
Calibre 2236
Water resistance
100 m
Power reserve
55 h

Specifications

Specifications from the1916company.com. Last checked . Sources

Case

Diameter
31 mm
Material
Everose Rolesor (Oystersteel and Everose gold)
Crystal
Sapphire, Cyclops lens over the date
Water resistance
100 m
Bezel
Domed

Dial

Colour
Slate

Movement

Calibre
Rolex 2236
Type
Automatic
Power reserve
55 h

Bracelet or strap

Bracelet or strap
Jubilee, five-piece links
Clasp
Concealed folding Crownclasp

Not yet recorded: thickness, lug width, lug-to-lug, case back, shape, indexes, hands, functions, years.

Sources

  • the1916company.com: case, water resistance, movement, bracelet. View sources

Missing values are shown as not yet recorded, never estimated. How we source our data

MovementRolex calibre 2236Specifications and every watch that uses it

Datejust 31 278241 questions

What size is the Rolex Datejust 31 278241?

The Rolex Datejust 31 278241 has a 31 mm case.

What movement does the Rolex Datejust 31 278241 use?

It uses the Rolex calibre 2236.

What is the Rolex Datejust 31 278241 case made of?

The case is everose Rolesor (Oystersteel and Everose gold).

Is the Rolex Datejust 31 278241 water resistant?

It is rated to 100 m.

About the Rolex Datejust

Rolex introduced the Datejust in 1945 to mark the company's 40th anniversary. It was the first self-winding chronometer wristwatch to show the date in a window on the dial. The original model combined the waterproof Oyster case with the Jubilee bracelet, which was introduced alongside it, and was launched in a 36mm case, still regarded as the classic size. The Datejust is offered today in sizes from 28mm to 41mm in steel, Rolesor and solid gold, with fluted or smooth bezels and a choice of Oyster or Jubilee bracelets.

Sources: Rolex Datejust (Wikipedia), The Complete Guide to the Rolex Datejust (Sotheby's), 2020 Rolex Submariner Date 41mm (Monochrome Watches, notes 3235 shared with Datejust 36 and 41)