Skip to content
Rolex Day-Date 40 mm

Rolex Day-Date 40 mm

AutomaticYellow Gold

Ref. 228348RBR-0043

Collection: Day-DateCase size: 40mmMovement: 3255

Rolex Day-Date 40, reference 228348RBR-0043, is a 40 mm case in yellow gold with a diamond-set bezel. The case measures 12 mm thick and carries a scratch-resistant sapphire crystal with a Cyclops lens over the date. Inside is the calibre 3255, a self-winding mechanical movement with a power reserve of approximately 70 hours and Rolex's Superlative Chronometer certification. The bright black dial shows luminous hands and indices, with the day and date displayed in apertures and set with diamonds. The watch is fitted on a President bracelet in yellow gold with a concealed folding Crownclasp. The screw-down crown keeps the case water resistant to a depth of 100 metres.

Add to my inventory

Free account required - pre-fills all specs automatically

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

Black

Numerals

Lines

BRACELET/STRAP

Bracelet/Strap

Yellow Gold

Clasp Type

Hidden Fold Clasp

Clasp Material

Yellow Gold

FEATURES & COMPLICATIONS

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

More from Rolex

Show all →

Other watches with the 3255 calibre

Show all →

FOR WATCH DEALERS

Trading the Rolex Day-Date 40 mm?

Clone any catalog watch into your stock, sync it to Chrono24 and eBay, and invoice it with your own tax settings.