Rolex · Datejust 31
Strap for Datejust 31 Stainless Steel/ Rose Gold / Domed - Diamond / Chocolate - Diamond / Oyster
Takes 16 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Datejust 31 278341rbr-0027
Selected for the 16 mm lug width
The Datejust 31 278341rbr-0027, seen from the bench
Frequently asked questions
What is the lug width of the Rolex Datejust 31 278341rbr-0027?
The lug width of the Rolex Datejust 31 ref. 278341rbr-0027 is 16mm. This measurement should be verified using a digital calliper between the two lugs, at the point where the strap interfaces with the case. It is a specific value for the 31mm Datejust format and determines compatibility with any aftermarket strap.
What is the best strap for the Rolex Datejust 31 278341rbr-0027?
For the Datejust 31 ref. 278341rbr-0027 in Rolesor Everose, a glossy alligator strap in bordeaux or cognac is the most coherent choice aesthetically: the scales reflect light in a manner complementary to the baguette diamond bezel. Shell cordovan with vegetable tanning is a noble alternative that develops a patina harmonising with the warm tones of Everose gold over time. Fine-grain calf leather is the most versatile option for daily wear.
How do you change the strap on a Rolex Datejust 31 278341rbr-0027?
To replace the strap or bracelet on the Datejust 31 ref. 278341rbr-0027, a springbar tool is required to remove the spring bars securing the strap to the lugs. Care must be taken not to scratch the Rolesor Everose case during the operation: it is advisable to rely on a trusted watchmaker or specialist atelier. Standard 1.5mm diameter spring bars are compatible with the 16mm lugs of this model.
Are there aftermarket straps compatible with the Rolex Datejust 31 278341rbr-0027?
Yes, the aftermarket offers straps compatible with the 16mm lug width of the Datejust 31 278341rbr-0027. Milano Straps offers a selection of handcrafted straps in various leathers and finishes, made with ends calibrated to the lug profile of the Datejust 31. It is important to verify that the chosen strap respects the 16mm lug width and features ends with the correct curvature to ensure a precise fit.
How long does a leather strap last on a Rolex Datejust 31?
The lifespan of a leather strap on a Datejust 31 depends on the type of leather, frequency of use and care. A quality alligator strap, regularly treated with appropriate products and stored correctly, can last between 3 and 7 years while maintaining good structural integrity. Shell cordovan with vegetable tanning tends to last longer due to the density of the fibre. Prolonged exposure to moisture, perspiration and chemical agents is the primary cause of deterioration: for a timepiece of this calibre, rotation between at least two straps is recommended.
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

