Rolex Datejust 278274-0034 31mm

The Rolex Datejust 31 m278274-0034 Bright Blue Sunray Dial is a radiant icon of feminine elegance and timeless versatility. Renowned for its refined proportions and captivating presence, this 31mm model continues the Datejust’s legendary heritage since 1945, seamlessly blending classic sophistication with vibrant modern appeal. With its striking bright blue sunray dial and the harmonious White Rolesor combination of Oystersteel and white gold, the Rolex Datejust offers understated luxury with a bold, luminous edge.

Design and Craftsmanship

This Datejust showcases a 31mm Oystersteel case paired with a fluted white gold bezel, embodying White Rolesor—a Rolex innovation merging steel’s resilience with gold’s nobility. The bright blue dial features a sunray finish, where expert brushing creates radiating grooves for delicate, shifting light reflections that bring the vibrant hue to life. Applied via Physical Vapour Deposition or electroplating and sealed with varnish, it ensures lasting intensity and depth. The date at 3 o’clock is magnified by the Cyclops lens, while scratch-resistant sapphire crystal safeguards the impeccable details—highlighting Rolex’s mastery in color and finishing artistry.

Movement and Performance

Powered by the automatic Calibre 2236, entirely manufactured by Rolex, this Datejust achieves Superlative Chronometer precision (-2/+2 seconds per day after casing). Featuring a Syloxi hairspring in silicon for superior stability and magnetic resistance, high-performance Paraflex shock absorbers, and bidirectional Perpetual rotor winding, it provides an approximate 55-hour power reserve. Centre hour, minute, and seconds hands with stop-seconds function deliver reliable, effortless timekeeping for any lifestyle.

Bracelet and Comfort

The Jubilee bracelet in Oystersteel, created in 1945 exclusively for the Datejust, features supple five-piece links for exceptional flexibility and comfort. Secured by a concealed folding Crownclasp, it offers a seamless, elegant fit that transitions effortlessly from day to evening, reflecting Rolex’s commitment to wearable refinement.

Specifications

• Model: Rolex Datejust 31 (m278274-0034)
• Case Material: Oystersteel and white gold (White Rolesor)
• Bezel Material: Fluted, white gold
• Dial: Bright blue sunray
• Movement: Automatic Calibre 2236, Manufacture Rolex
• Power Reserve: ~55 hours
• Bracelet: Jubilee, Oystersteel with concealed Crownclasp
• Water Resistance: 100 metres / 330 feet
• Crystal: Scratch-resistant sapphire with Cyclops lens over the date

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FAQs

1. What creates the bright blue dial’s dynamic sunray effect?

   Masterful brushing produces radiating grooves that diffuse light subtly, with the blue applied precisely and varnished for vibrant, shifting reflections.

2. Which movement powers this Datejust 31?

   The Calibre 2236 with Syloxi silicon hairspring, Paraflex shock absorbers, and a 55-hour power reserve for exceptional chronometer accuracy and reliability.

3. What defines the White Rolesor construction?

   Oystersteel for robust durability and corrosion resistance, combined with white gold for the fluted bezel and elegant luster—a Rolex signature.

4. How comfortable is the Jubilee bracelet?

   Its five-piece link design offers supreme suppleness, with a concealed Crownclasp ensuring secure, seamless all-day wear.

5. What is the water resistance rating?

   100 metres / 330 feet, thanks to the Oyster architecture and Twinlock crown system, suitable for swimming and everyday exposure.