Rolex Day-Date 40 228235-0025 40mm

The Rolex Day-Date 40 reference m228235-0025 brings a fresh, modern edge to the legendary presidential watch, a collection that has stood as the ultimate symbol of success since 1956. Executed entirely in Rolex’s exclusive 18 kt Everose gold—a patented rose gold alloy infused with platinum to prevent any fading—this 40mm timepiece showcases a bold olive green sunray dial paired with the iconic fluted bezel, delivering vibrant sophistication and subtle light play. Perfect for those who desire a contemporary twist on classic luxury, it preserves the signature instantaneous day and date complications in a design full of character and warmth.

Design Highlights and Material Excellence

The m228235-0025 radiates refined presence with its 40mm Oyster case—featuring a monobloc middle case, screw-down case back, and winding crown—all produced in-house from 18 kt Everose gold for unmatched alloy purity and a soft, timeless rose glow. The fluted bezel in matching Everose gold, originally a functional element, now serves as a light-catching signature that enhances the overall elegance.

The olive green dial is a standout achievement: expert sunray brushing creates outward grooves that generate dynamic, shifting reflections, bringing the rich green hue to life with every movement. Applied through advanced techniques and protected by a light varnish, it offers exceptional depth and vibrancy. Chromalight-filled hands and markers ensure discreet low-light readability. The full day spelling appears at 12 o’clock, the date at 3 o’clock benefits from the Cyclops magnification lens, and scratch-resistant sapphire crystal safeguards the surface.

Completing the look is the President bracelet—debuted in 1956 exclusively for the Day-Date—with semi-circular three-piece links in 18 kt Everose gold for outstanding comfort and graceful drape, fastened by a concealed folding Crownclasp.

Movement and Performance Precision

Powering this model is the Calibre 3255, a next-generation perpetual self-winding mechanical movement entirely designed and built by Rolex. It earns Superlative Chronometer certification (-2/+2 seconds per day after casing) and includes:

• Blue Parachrom hairspring for paramagnetic resistance
• Paraflex shock absorbers for enhanced durability
• Bidirectional Perpetual rotor for efficient winding

Instantaneous day and date switching at midnight, secure rapid-setting, and stop-seconds provide user-friendly functionality. A 70-hour power reserve and Twinlock crown system offer 100 metres (330 feet) water resistance.

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Technical Overview

• Reference: Rolex Day-Date 40 (m228235-0025)
• Case Diameter: 40 mm
• Material: 18 kt Everose gold
• Bezel: Fluted, 18 kt Everose gold
• Dial: Olive green sunray with Chromalight luminescence
• Bracelet: President, semi-circular three-piece links in 18 kt Everose 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

Key Questions Answered

1. How does the olive green dial achieve its lively effect?

   Sunray brushing creates radiating grooves for dynamic light diffusion, with the green applied expertly and varnished to produce intense, shifting depth.

2. What advantages does Everose gold bring to this watch?

   Rolex’s patented alloy with platinum ensures the rose tone remains unfading, cast in-house for a warm hue that perfectly complements the olive green dial.

3. What makes the President bracelet special?

   Designed solely for the Day-Date in 1956, its semi-circular links in precious gold deliver superior comfort and a concealed clasp for elegant continuity.

4. How reliable is the Calibre 3255 in everyday scenarios?

   The Parachrom hairspring and Paraflex absorbers guard against magnetism, temperature changes, and shocks, while the extended reserve maintains unwavering precision.

5. What expertise goes into the sunray dial finishing?

   In-house brushing and color processes create flawless light interaction, blending the olive green with Everose gold for a bold, harmonious modern classic.