The Rolex Datejust is the world’s first self-winding wristwatch to display the date through a magnifying lens on the crystal — a feature so ubiquitous today we take it for granted, but which Rolex invented in 1945. Over 80 years later, the Datejust remains Rolex’s best-selling watch and the definitive dress-sport timepiece.
History: Rolex’s Gift to the World
Rolex launched the Datejust on April 15, 1945 — the company’s 40th anniversary — as the world’s first automatic watch with an instantaneously jumping date display. Previous watches displayed the date via a gradual creep across midnight; the Datejust’s date snapped cleanly to the new date at exactly midnight. The Cyclops magnifying lens, added in 1954, made the date 2.5× larger and easier to read at a glance.
The Datejust’s 1945 design has proven so good that Rolex has changed its outline remarkably little. A 1950s Datejust and a 2026 Datejust are immediately recognisable as the same watch.
Current Models: 36mm and 41mm
Today the Datejust is available in two sizes — the 36mm Ref. 126200/126234 and the 41mm Ref. 126300/126334. Both use Rolex’s latest-generation automatic movements and are available in an extraordinary range of dial, bezel, and bracelet combinations.
| Specification | Datejust 36 | Datejust 41 |
|---|---|---|
| Reference | 126200 / 126234 | 126300 / 126334 |
| Movement | Cal. 3235 | Cal. 3235 |
| Power Reserve | ~70 hours | ~70 hours |
| Water Resistance | 100m | |
| Bezel Options | Smooth, fluted, diamond | Smooth, fluted, diamond |
| Retail From | ~$7,150 USD | ~$8,150 USD |
Calibre 3235: The Heart of the Modern Datejust
The Calibre 3235 introduced in 2015 is Rolex’s current flagship movement — used across the Datejust, Submariner, and many other models. It features the Chronergy escapement (developed with LVMH’s movement division), Paraflex shock absorbers, and delivers approximately 70 hours of power reserve. It is certified as a Superlative Chronometer: ±2 seconds per day in the cased watch.
Dial and Bezel Variety
No other Rolex sports watch offers the Datejust’s customisation range. Dials are available in dozens of colours — silver, black, white, blue, green, chocolate, slate, purple, and more — in both smooth and sunray-brushed finishes. Some dials feature diamond hour markers. Bezels come smooth, fluted (in white or yellow gold), or fully diamond-set. Bracelets include the Oyster (sporty) and Jubilee (dressy, five-link).
This variety is both the Datejust’s greatest strength and a potential weakness: with so many configurations, resale values vary enormously. Stainless steel with smooth bezel and Jubilee bracelet (“Ref. 126234”) tends to hold value best. Unusual colour combinations or diamond bezels are more personal and may be harder to resell.
Vintage Datejust: The Collector’s Angle
Vintage Datejusts from the 1950s–1980s represent some of the best-value vintage Rolex buying. A clean 1960s Datejust with an original “sigma dial” (with sigma symbols flanking the Rolex text indicating gold hour markers) can be found for $3,000–$6,000 — a fraction of what equivalent Submariners command. “Tropical” dials (where the lacquer has aged to rich brown tones) attract significant collector premiums.
Verdict
The Rolex Datejust is not the most exciting watch Rolex makes, but it may be the most important. It invented the date window. It defined the dress-sport watch category. It has been worn by presidents, musicians, athletes, and ordinary people going about their ordinary lives for eighty years. Buy a Datejust and you are buying the most enduring idea Rolex ever had.
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