The Rolex Sky-Dweller reference 336938 pairs an 18K yellow-gold case and bracelet with an annual calendar and a second-time-zone display. Its standout interface is the Ring Command bezel, which selects the setting that the crown will adjust. Published specifications describe a 42mm case, 100m water resistance and caliber 9002; the available accounts are publisher reports, not independent measurements or hands-on testing for this article.
What the reference 336938 is
Reference 336938 is the yellow-gold version of the Sky-Dweller. WatchGuys reports Oyster and Jubilee bracelet configurations in solid 18K yellow gold; Fratello’s feature concerns a Jubilee-equipped example and also covers the Everose-gold variant. Rolex configurations can change by market and over time, so confirm the exact dial and bracelet currently offered with Rolex or an authorized retailer.
The model is designed for travelers who want a second time zone and a calendar that accounts automatically for months with 30 or 31 days. Those functions distinguish it from a simpler date watch, while the full-gold construction gives it a different material and visual character from the steel-and-white-gold-bezel Sky-Dweller.
How the Ring Command bezel works
The fluted bezel is a control selector as well as a design feature. WatchGuys describes a three-position Ring Command interface: rotate the bezel to choose a setting, then use the crown to adjust the selected function. The bezel therefore changes the crown’s role rather than directly setting the watch by itself.
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The sources describe the functions as including local time, the second time zone and calendar settings. WatchGuys reports that local hours can be moved forward or backward without changing minutes or seconds, and that the 24-hour disc indicates the second time zone. The Saros annual calendar distinguishes 30- and 31-day months, but needs correction at the end of February. For exact setting order and precautions, follow the manual for the watch rather than treating this overview as operating instructions.
Reported specifications
| Specification | Reported detail |
|---|---|
| Case and bracelet | 18K yellow gold for reference 336938; WatchGuys reports Oyster or Jubilee bracelets. |
| Case diameter | 42mm, as reported by Fratello and WatchGuys. |
| Length and lug spacing | 50.5mm length and 21mm lug spacing, listed by Fratello. |
| Thickness | Fratello lists 14mm. WatchGuys reports a different approximate thickness, so the figure is not settled across these sources. |
| Movement | Automatic Rolex caliber 9002, as reported by both publications. |
| Frequency and power reserve | 28,800 vibrations per hour and 72 hours, listed by Fratello. |
| Water resistance | 100m, reported by Fratello and WatchGuys. |
| Other construction details | Sapphire crystal and screw-in case back, listed by Fratello. |
Fratello’s specification table covers both yellow-gold and Everose-gold references in some entries. The metal description above is specific to 336938; measurements and movement figures are reported specifications, not results from testing conducted for this article.
Rank #2
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How it may wear
The 42mm diameter and 50.5mm length provide a more useful starting point for assessing fit than the diameter alone. Fratello lists the 14mm thickness, while WatchGuys gives a conflicting approximate thickness, so check the specific watch in person if cuff clearance matters.
WatchGuys characterizes the watch as substantial and reports an approximately 230g sized weight, along with its impressions of wrist presence and cuff fit. That weight is the retailer’s account, not an independently verified measurement; bracelet length and sizing also affect the weight of a particular example. Fratello’s discussion of the Jubilee design is likewise a publisher’s impression rather than a universal fit assessment.
Rank #3
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336938 compared with other Sky-Dweller references
| Reference | Key distinction reported by WatchGuys | What the difference means |
|---|---|---|
| 336938 | Full 18K yellow-gold configuration; caliber 9002. | The gold case and bracelet define this version. WatchGuys reports Oyster and Jubilee bracelet options. |
| 336934 | Oystersteel case and bracelet with an 18K white-gold bezel; caliber 9002 and the same main functions and case dimensions. | It retains the Ring Command, annual calendar and dual-time concept while using a different combination of metals. |
| 326938 | Earlier yellow-gold predecessor, identified by WatchGuys as using caliber 9001. | The 336938 is the later reference with caliber 9002. Claims about specific movement improvements are WatchGuys’ account, not independently established here. |
WatchGuys also compares the Sky-Dweller with the Day-Date 228238. The useful distinction is purpose: the Sky-Dweller combines travel-time and annual-calendar functions, while the Day-Date is a more traditional yellow-gold Rolex with day and date displays. Which suits a buyer depends on preferred functions, size, bracelet and wearing profile; the sources do not establish that one is objectively superior.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Price and buying checks
No independently verified current US retail price is established by the available sources. Fratello lists CHF 47,000 / €51,000 for the yellow-gold reference in its publication context; those are historical, region-specific figures, not current prices. WatchGuys discusses 2026 retail and secondary-market figures, and WatchCharts provides marketplace listings and market context, but neither should be read as proof of a guaranteed price or completed-sale value. Check current regional pricing and availability directly with Rolex or an authorized retailer.
Rank #4
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For a pre-owned example, use basic verification steps before treating a listing as comparable to a new watch:
- Confirm that the reference and metal match 336938, and verify the exact dial and bracelet configuration.
- Inspect the case, crystal, clasp and bracelet for condition and completeness, including whether links have been removed.
- Ask for service documentation and compare the seller’s account with the watch and paperwork.
- Check the seller’s status and return terms. WatchGuys offers inspection advice as a retailer; it is not official Rolex policy.
Sources and limits of the available evidence
The configuration, operating descriptions and some wearing and market observations above are attributed to the retailer review by WatchGuys. Fratello’s article supplies a separate specification table, historical regional price context and its own impressions of the gold Jubilee version: Fratello Watches. WatchCharts’ 336938 overview provides marketplace listings and market context, not a verified transaction price. The official Rolex product page was not accessible for this research, so current official pricing, stock, configuration availability and service costs are not confirmed here.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
