Rolex · Datejust 31

Strap for Datejust 31 Rose Gold - Diamond / Silver - Floral / President

Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width16 mm
Case diameter31 mm
Reference278285RBR-0036
FamilyDatejust 31
MovementRolex caliber 2236 Hours, Minutes, Seconds | Date | Chronometer
CaseRose Gold

Spring bar

Spring bars for Rolex

The right category for this model · choose the 16 mm size

Straps for the Datejust 31 278285RBR-0036

Selected for the 16 mm lug width

All 16 mm straps →

The Datejust 31 278285RBR-0036, seen from the bench

The Rolex Datejust 31 ref. 278285RBR-0036 belongs to the lineage that redefined modern watchmaking since 1945. This 31mm Everose gold case features a diamond-set Fluted bezel and mother-of-pearl dial with pavé setting. The automatic caliber 2236 offers approximately 55 hours of power reserve and ±2 seconds per day precision, certified COSC chronometer. The iconic date window at 3 o'clock with Cyclops lens and screw-down Twinlock crown provide 100 meters water resistance. Lug width is 16mm.

Frequently asked questions

What is the lug width of the Rolex Datejust 31 278285RBR-0036?

The Rolex Datejust 31 ref. 278285RBR-0036 has a lug width of 16mm. This measurement is standard across the entire Datejust 31 family and should be verified using a digital calliper to measure the internal distance between the two lugs at the strap insertion point.

What is the best strap for the Rolex Datejust 31 278285RBR-0036?

For this Everose gold reference with a diamond-set bezel, a vegetable-tanned alligator strap represents the finest choice: the natural grain and patina that develops over time complement the precious case finishes beautifully. High-quality alternatives include polished box-calf leather for a formal aesthetic and shell cordovan for those who favour a compact texture and a sartorial appearance.

How do you change the strap on a Rolex Datejust 31?

To replace the strap on a Datejust 31, a forked spring bar tool sized for the 16mm spring bars is required. It is advisable to work on a soft surface to protect the Everose gold lugs from scratches. If in any doubt, it is preferable to consult a watchmaker or contact Casati Milano for dedicated assistance.

Are there aftermarket straps compatible with the Rolex Datejust 31 278285RBR-0036?

Yes, high-quality aftermarket straps compatible with the 16mm lug width of the Datejust 31 are available. Milano Straps offers a curated selection of handcrafted straps in 16mm width, made from selected leathers and designed to be fully compatible in shape and dimension with this Rolex reference.

How long does a leather strap last on a Rolex Datejust 31?

The lifespan of a leather strap depends on the type of leather, care routine and daily use. A quality vegetable-tanned alligator strap, rotated regularly and kept away from direct moisture, can last between 3 and 5 years whilst retaining a distinguished appearance. Calf leather tends to have a slightly shorter lifespan, whereas shell cordovan is among the most durable materials owing to its dense, compact fibre structure.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only