Rolex Day-Date 40 228398tbr-0006 40mm

The Rolex Day-Date 40 reference m228398tbr-0006 is a luminous celebration of heritage and brilliance, a timepiece that has defined unparalleled prestige since the Day-Date’s debut in 1956. Crafted entirely in radiant 18 ct yellow gold, this 40mm model features a captivating silver sunray dial and a diamond-set bezel, where subtle reflections meet sparkling accents for refined, understated opulence. Ideal for those who seek timeless distinction with a touch of radiance, it embodies the classic instantaneous day and date displays in a design of serene elegance.

Exquisite Design and Gem-Setting Artistry

The m228398tbr-0006 enchants with its 40mm Oyster case—monobloc middle case, screw-down case back, and winding crown—all cast from Rolex’s in-house 18 ct yellow gold foundry for exceptional purity and a warm, polished sheen. The bezel, paved with diamonds, forms a brilliant border where each gem is hand-set for precise alignment, orientation, height, and optimal light play.

The silver dial showcases Rolex’s sunray finishing prowess: fine grooves brushed outward from the center create delicate, moving light reflections that shift with the wrist. The silver color is applied via Physical Vapour Deposition or electroplating, sealed with a light varnish for enduring vibrancy and legibility. Chromalight luminescence on the hands and markers delivers a sustained blue glow. The day window at 12 o’clock spells the day fully, the date at 3 o’clock is enlarged by the Cyclops lens, and scratch-resistant sapphire crystal protects the dial.

The President bracelet—introduced in 1956 exclusively for the Day-Date—features semi-circular three-piece links in 18 ct yellow gold for luxurious comfort and fluidity, with a concealed folding Crownclasp.

Superior Movement and Enduring Performance

The Calibre 3255, a next-generation perpetual self-winding mechanical movement fully designed and manufactured by Rolex, powers this model with Superlative Chronometer certification (-2/+2 seconds per day after casing). It includes:

• Paramagnetic blue Parachrom hairspring
• High-performance Paraflex shock absorbers
• Bidirectional Perpetual rotor

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Technical Specifications

• Model: Rolex Day-Date 40 (m228398tbr-0006)
• Case Diameter: 40 mm
• Material: 18 ct yellow gold
• Bezel: Diamond-set, 18 ct yellow gold
• Dial: Silver sunray with Chromalight luminescence
• Bracelet: President, semi-circular three-piece links in 18 ct yellow gold
• Movement: Calibre 3255, Manufacture Rolex, self-winding
• Functions: Hours, minutes, seconds; instantaneous day and date with rapid-setting
• Power Reserve: ~70 hours
• Water Resistance: 100 metres / 330 feet
• Crystal: Scratch-resistant sapphire with Cyclops lens over date

Frequently Asked Questions

1. What Produces the Silver Sunray Dial’s Elegant Glow?

Outward-brushed grooves diffuse light subtly and dynamically, with the silver applied precisely and varnished for a characteristic, shifting radiance.

2. How Is the Diamond-Set Bezel Achieved with Such Mastery?

Gem-setters hand-craft seats in the gold, selecting and positioning each diamond for exact calibration, regularity, and brilliant light return.

3. What Legacy Makes the President Bracelet Iconic?

Debuted in 1956 for the Day-Date, its semi-circular links in precious gold offer refined fluidity and a concealed clasp for seamless, luxurious wear.

4. How Does the Calibre 3255 Excel in Everyday Use?

The Parachrom hairspring and Paraflex absorbers resist magnetism, temperature, and shocks, while the extended power reserve maintains unwavering accuracy.

5. What Craftsmanship Defines the Gold and Gem Integration?

In-house foundry purity combines with expert gem-setting for flawless harmony, creating a balanced masterpiece of enduring luxury and precision.