Strap for Sky-Dweller White Gold / Black / OysterFlex

The lug width of the Rolex Sky-Dweller 336239-0002 is 21mm. This measurement is specific to Rolex's medium to large-sized sports watches. To verify strap compatibility, measure the space between the two lug seats using a digital calliper, respecting tolerances of ±0.2mm. Incorrect measurement is the most common cause of incompatibility.

For the 336239-0002 in 18k white gold, we recommend vegetable-tanned alligator, which features irregular grain texture that enhances the metal's luminosity, or shell cordovan, which develops a deep burgundy patina over time. Fine-grained calf leather represents a contemporary versatile alternative available in all colour tones. For intensive aeronautical use, technical rubber straps are acceptable when paired with a solid 18k white gold deployante buckle, never plated.

Remove the strap by using a specialised tool to extract the spring bars from the lug seats without forcing. The bars must be extracted slightly outward whilst keeping the strap horizontal. Insert the new strap's bars into the lower seat first, then the upper seat. Verify that the strap is centred on the case before wearing the watch. If unfamiliar with the procedure, contact an authorised Rolex service centre.

Original Rolex straps are crafted from premium leather selected by exclusive suppliers, with a certified lifespan of 18–24 months under daily wear. Quality artisanal aftermarket straps can achieve equivalent or superior technical specifications, offering customisation in leather selection, tanning method, and deployante finish. The primary difference lies in raw material traceability and manufacturing warranty coverage.

Leather strap longevity depends on tanning method, frequency of use, and maintenance. A vegetable-tanned strap in good condition lasts 18–36 months with daily wear; chrome-tanned leather has a shorter lifespan of 12–18 months. Prolonged exposure to humidity, chlorine, and perspiration accelerates fibre degradation. We recommend rotating straps, keeping them dry, and occasionally applying pure lanolin conditioner.