Rolex · Oyster Perpetual 31
Strap for Oyster Perpetual 31 Stainless Steel / Pink
Takes 17 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Oyster Perpetual 31 277200-0004 (aka: M277200-0001), seen from the bench
Frequently asked questions
What is the lug width of the Rolex Oyster Perpetual 31 277200-0004?
The lug width of the Rolex Oyster Perpetual 31 reference 277200-0004 is 16mm. Using this exact measurement is essential to ensure a precise strap fitment, with no lateral play between the strap and the Oyster case lugs.
What is the best strap for the Rolex Oyster Perpetual 31 277200-0004?
The choice depends on the context of wear. For formal occasions, a glossy alligator strap in navy or black complements the clean lines of the Oyster case. For everyday use, a vegetable-tanned calf leather strap offers durability and develops a distinguished patina over time. A NATO nylon strap is ideal for sporting contexts, preserving the model's water resistance.
How do I change the strap on the Rolex Oyster Perpetual 31 277200-0004?
To replace the bracelet or strap on the Rolex Oyster Perpetual 31, you will need a spring bar tool. The lugs of the 277200-0004 accommodate standard spring bars with a 1.5mm diameter. It is advisable to work on a soft surface to protect the case, and if inexperienced, to entrust the operation to a watchmaker or specialist atelier.
Is there an aftermarket strap compatible with the Rolex Oyster Perpetual 31 277200-0004?
Yes. Any strap with a 16mm lug width is technically compatible with the Rolex Oyster Perpetual 31 277200-0004. Milano Straps offers a curated selection of handcrafted straps in 16mm — in alligator, calf leather, shell cordovan, NATO, and rubber — designed to pair seamlessly with the Oystersteel Oyster case.
How long does a leather strap last on a Rolex Oyster Perpetual 31?
The lifespan of a leather strap depends on the quality of the hide and how well it is maintained. A handcrafted alligator or shell cordovan strap, rotated regularly with a second strap and kept away from excessive moisture and perspiration, can last between three and five years while retaining a well-kept appearance. Vegetable-tanned leather straps develop a personal patina over time, enhancing their aesthetic character.
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

