Omega Speedmaster Moonwatch Caliber 321 Steel vs Rolex Datejust 36 126231 Chocolate Dial

In-Depth Comparison

The Omega Speedmaster Moonwatch Caliber 321 Steel and the Rolex Datejust 36 126231 Chocolate Dial represent two compelling options in the luxury watch market. Both timepieces have earned devoted followings among collectors and enthusiasts, but they approach horology from distinctly different perspectives. Let's break down how these two watches compare across the key dimensions that matter most to buyers.

Heritage And Brand Prestige

Omega and Rolex are both highly respected names in watchmaking. Both watches hail from Switzerland, benefiting from the region's deep horological tradition. This particular Speedmaster reference was introduced in 2020, while this Datejust reference debuted in 2018. The Omega Speedmaster Moonwatch Caliber 321 Steel is the newer release, potentially featuring more modern technology and finishing.

Movement And Mechanics

At the heart of the Omega Speedmaster Moonwatch Caliber 321 Steel beats the Omega 321 caliber offering a 55-hour power reserve running at 21,600 vph with 17 jewels. The Rolex Datejust 36 126231 Chocolate Dial is powered by the Rolex 3235 with a 70-hour power reserve operating at 28,800 vph featuring 31 jewels. The Rolex Datejust 36 126231 Chocolate Dial wins on power reserve with a 15-hour advantage, which means less frequent winding for those who rotate watches.

Dimensions And Wearability

The Omega Speedmaster Moonwatch Caliber 321 Steel features a 39.7mm case at 13.1mm thick with a 46.0mm lug-to-lug measurement, crafted in Stainless Steel. The Rolex Datejust 36 126231 Chocolate Dial comes in at 36.0mm and 11.8mm thick with 44.5mm lug-to-lug, constructed from Rolesor (Oystersteel and 18k Everose Gold). The Rolex Datejust 36 126231 Chocolate Dial wears more compactly on the wrist, making it potentially more suitable for smaller wrists or those who prefer understated proportions. At 125g, the Rolex Datejust 36 126231 Chocolate Dial is the lighter of the two.

Materials And Construction

The Omega Speedmaster Moonwatch Caliber 321 Steel uses a Sapphire with anti-reflective coating crystal paired with a Fixed, polished black ceramic with white enamel tachymeter bezel, while the Rolex Datejust 36 126231 Chocolate Dial features Sapphire with Cyclops lens crystal with a Fixed, 18k Everose Gold fluted bezel. On the wrist, the Omega Speedmaster Moonwatch Caliber 321 Steel comes on a Stainless steel bracelet with Deployant clasp, while the Rolex Datejust 36 126231 Chocolate Dial is fitted with Jubilee bracelet, Oystersteel and 18k Everose Gold featuring Oysterclasp with Easylink comfort extension.

Water Resistance And Capability

The Omega Speedmaster Moonwatch Caliber 321 Steel is rated to 50m / 164ft and the Rolex Datejust 36 126231 Chocolate Dial to 100m / 328ft. For water sports and diving, the Rolex Datejust 36 126231 Chocolate Dial provides superior depth capability.

Pricing And Value

At retail, the Omega Speedmaster Moonwatch Caliber 321 Steel lists for $14,100 compared to $14,050 for the Rolex Datejust 36 126231 Chocolate Dial. On the secondary market, the Omega Speedmaster Moonwatch Caliber 321 Steel trades around $13,500 while the Rolex Datejust 36 126231 Chocolate Dial commands approximately $13,000.

The Verdict

Choosing between the Omega Speedmaster Moonwatch Caliber 321 Steel and the Rolex Datejust 36 126231 Chocolate Dial ultimately comes down to personal priorities. For dress occasions and smaller wrists, the Rolex Datejust 36 126231 Chocolate Dial is more versatile. Both watches are exceptional timepieces that will serve their owner well for generations. We recommend trying both on the wrist at an authorized dealer before making your final decision, as comfort and emotional connection are ultimately just as important as specifications.