Rolex Day-Date 40 228398tbr-0007 40mm

The Rolex Day-Date 40 reference m228398tbr-0007 is a captivating blend of timeless prestige and subtle brilliance, a watch that has represented excellence since the Day-Date’s launch in 1956. Crafted entirely in radiant 18 ct yellow gold, this 40mm model features a warm champagne-colour sunray dial and a diamond-set bezel, where golden hues meet sparkling accents for an aura of refined luxury. Suited for those who value understated opulence, it offers the iconic instantaneous day and date displays with effortless sophistication.

Exquisite Design and Gem-Setting Artistry

The m228398tbr-0007 impresses 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 deep, inviting polish. The bezel, paved with diamonds, creates a radiant frame where each gem is hand-set for precise alignment, orientation, height, and brilliant light dispersion.

The champagne-colour dial exemplifies Rolex’s sunray finishing: fine grooves brushed outward from the center produce subtle, dynamic reflections that shift with wrist movement. The warm champagne tone is applied via Physical Vapour Deposition or electroplating, sealed with a light varnish for lasting 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-0007)
• Case Diameter: 40 mm
• Material: 18 ct yellow gold
• Bezel: Diamond-set, 18 ct yellow gold
• Dial: Champagne-colour 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 Creates the Champagne Dial’s Warm, Dynamic Glow?

Sunray brushing with outward grooves diffuses light subtly, applied precisely and varnished for a shifting radiance that enhances the champagne tone.

2. How Is the Diamond-Set Bezel Mastered for Brilliance?

Gem-setters hand-craft seats in the gold, positioning each diamond for exact calibration, regularity, and maximum light return in a seamless design.

3. What Elevates the President Bracelet in Prestige Models?

Its 1956 debut with semi-circular links in precious gold provides refined fluidity and comfort, featuring a concealed clasp for uninterrupted elegance.

4. How Does the Calibre 3255 Perform in Varied Conditions?

The Parachrom hairspring and Paraflex absorbers resist magnetism, temperature changes, and shocks, while the extended reserve ensures consistent accuracy.

5. What Craftsmanship Defines the Gold and Diamond Harmony?

In-house foundry purity meets expert gem-setting for flawless integration, balancing the sunray champagne dial with sparkling bezel accents in enduring luxury.