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Rolex Day-Date 40 mm

Rolex Day-Date 40 mm

AutomaticYellow Gold

Ref. 228348RBR-0045

Collection: Day-DateCase size: 40mmMovement: 3255

The Rolex Day-Date 40 mm, reference 228348RBR-0045, is cased in 18 ct yellow gold with a diameter of 40 mm and a case thickness of 12 mm. The bezel is diamond-set, giving the case its sparkle against the green ombré dial, which fades from colour at the centre to black at the edge. A Cyclops lens sits over the date on the scratch-resistant sapphire crystal. Inside is the calibre 3255, a self-winding movement with a power reserve of approximately 70 hours and Superlative Chronometer certification. The watch shows the day and date, and its screw-down crown works with the monobloc case construction. It is fitted with a President bracelet in yellow gold, closed by a concealed folding Crownclasp. The Twinlock crown helps keep the case waterproof to 100 metres.

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Last updated 4 Oct 2026Suggest a correction

TECHNICAL SPECIFICATIONS

GENERAL

Gender

Men

CASE

Diameter

40mm

Thickness

12mm

Case Material

Yellow Gold

Water Resistance

100m

Crystal

Sapphire Crystal

Bezel Material

Gem-set

MOVEMENT

Movement Type

Automatic

Caliber

3255

Power Reserve

72h

Frequency

28,800 vph (4 Hz)

Jewels

31 jewels

DIAL

Dial Color

Green

Numerals

Roman Numerals

BRACELET/STRAP

Bracelet/Strap

Yellow Gold

Clasp Type

Hidden Fold Clasp

Clasp Material

Yellow Gold

FEATURES & COMPLICATIONS

Central secondsChronometerDateGemstones and/or diamondsQuick SetScrew-Down CrownWeekday

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