Rolex Day-Date 40 228238-0066 40mm

The Rolex Day-Date 40 reference m228238-0066 is a paragon of refined luxury and technical excellence, a watch that has embodied prestige and innovation since the Day-Date’s introduction in 1956. Crafted entirely in radiant 18ct yellow gold, this 40mm masterpiece features a sophisticated silver sunray dial and the iconic fluted bezel, offering a harmonious blend of classic warmth and understated brilliance. Ideal for those who appreciate the ultimate symbol of achievement, it provides the signature instantaneous day and date displays with timeless poise.

Design and Craftsmanship

The Day-Date 40 m228238-0066 captivates with its 40mm Oyster case, featuring a monobloc middle case, screw-down case back, and winding crown—all forged in Rolex’s in-house 18 ct yellow gold for exceptional purity and a luminous polish. The fluted bezel in matching yellow gold, a Rolex signature evolved from functional origins, enhances light reflection through its precise grooves.

The silver dial achieves its captivating sunray finish via expert brushing, with grooves radiating outward to create subtle, shifting reflections. The color applies using Physical Vapour Deposition or electroplating, sealed with a light varnish for enduring vibrancy and legibility. Chromalight luminescence on the hands and markers delivers a long-lasting blue glow, protected by scratch-resistant sapphire crystal with a Cyclops lens over the date at 3 o’clock. The full day displays elegantly at 12 o’clock.

Exclusive to the Day-Date, the President bracelet in 18 ct yellow gold features semi-circular three-piece links for supreme refinement and comfort, secured by a concealed folding Crownclasp.

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Exceptional Technical Performance

The advanced Calibre 3255—a perpetual mechanical self-winding movement fully developed and manufactured by Rolex—drives this model with Superlative Chronometer precision (-2/+2 seconds per day after casing). It includes:

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

Functions feature instantaneous day and date changes at midnight, secure rapid-setting, and stop-seconds. An approximate 70-hour power reserve offers extended autonomy, while the Twinlock system ensures 100 metres (330 feet) water resistance. Click for See Our Rolex Watches Collections.

Watch Specifications

• Model: Rolex Day-Date 40 (m228238-0066)
• Case Size: 40 mm
• Material: 18 ct yellow gold
• Bezel: Fluted, 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: Centre hour, minute, and seconds; instantaneous day and date with rapid-setting
• Power Reserve: Approximately 70 hours
• Water Resistance: 100 metres / 330 feet
• Crystal: Scratch-resistant sapphire with Cyclops lens over the date

FAQs

1. What Creates the Silver Dial’s Subtle Brilliance?

The sunray finish with radiating grooves diffuses light delicately, applied via advanced techniques and sealed with varnish for lasting, dynamic reflections.

2. How Does the President Bracelet Ensure Comfort and Elegance?

Its semi-circular three-piece links, designed exclusively for the Day-Date in 1956, provide fluidity and refinement, with a concealed Crownclasp for seamless integration.

3. What Key Elements Define the Calibre 3255’s Superiority?

Innovations like the Parachrom hairspring for resistance to magnetism and shocks, plus a 70-hour reserve, deliver exceptional accuracy and reliability.

4. Why Opt for 18 ct Yellow Gold in This Day-Date?

Rolex casts it in-house for unmatched purity and warmth, offering durability alongside the iconic glow that symbolizes prestige.

5. How Versatile Is This Watch for Everyday Use?

The robust Oyster case, 100-metre water resistance, and sapphire crystal make it resilient and practical, while the luxurious design suits formal and daily occasions.