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Rolex Day-Date 40 mm

Rolex Day-Date 40 mm

AutomaticYellow Gold

Ref. 228348RBR-0002

Collection: Day-DateCase size: 40mmMovement: 3255

Rolex Day-Date 40, reference 228348RBR-0002, cases the watch in 40 mm of yellow gold. The case measures 12 mm thick and pairs with a diamond-set bezel for a dressier finish. A scratch-resistant sapphire crystal with a Cyclops lens sits over the date, and the champagne dial is set with diamonds. Inside runs the calibre 3255, a self-winding Rolex movement with a power reserve of approximately 70 hours, certified as a Superlative Chronometer. The day and date functions display through apertures with instantaneous, secure rapid-setting. A President bracelet in yellow gold closes with a concealed folding Crownclasp. The screw-down 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

Champagne

Numerals

Gemstones

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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