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Rolex Datejust 31 mm

Rolex Datejust 31 mm

AutomaticGold/Steel

Ref. 278384RBR-0022

Collection: DatejustCase size: 31mmMovement: 2236

Rolex Datejust 31 mm, reference 278384RBR-0022, cases in steel and gold at 31 mm across. The case takes a diamond-set bezel, giving the dial a set border, and holds a sapphire crystal with a Cyclops lens over the date. The mint green dial pairs with luminous hands and indices, and central seconds runs from the self-winding calibre 2236, a Rolex chronometer with 55 hours of power reserve. Date sits at three o'clock with instantaneous change. A screw-down crown protects the movement, and the watch is fitted on a steel Jubilee-style bracelet with a concealed folding Crownclasp in steel and gold. The screw-down crown holds the case to its 100 metre water resistance rating.

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Last updated 4 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

GENERAL

Gender

Unisex

CASE

Diameter

31mm

Case Material

Gold/Steel

Water Resistance

100m

Crystal

Sapphire Crystal

Bezel Material

Gem-set

MOVEMENT

Movement Type

Automatic

Caliber

2236

Power Reserve

55h

Frequency

28,800 vph (4 Hz)

Jewels

55 jewels

DIAL

Dial Color

Green

Numerals

Lines

BRACELET/STRAP

Bracelet/Strap

Steel

Clasp Type

Hidden Fold Clasp

Clasp Material

Gold/Steel

FEATURES & COMPLICATIONS

Central secondsChronometerDateGemstones and/or diamondsLuminous handsLuminous indicesQuick SetScrew-Down Crown

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