Rolex · Oyster Perpetual 31
Strap for Oyster Perpetual 31 Stainless Steel / Yellow
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 277200-0005 (aka: M277200-0001), seen from the bench
Frequently asked questions
What is the lug width of the Rolex Oyster Perpetual 31 277200-0005?
The Rolex Oyster Perpetual 31 reference 277200-0005 features a lug width of 16mm, measured internally between the two lugs at the strap attachment point. This is a specific dimension requiring straps dedicated to the 16mm format, which are not interchangeable with the 19mm or 20mm sizes used on other Rolex references.
What is the best strap for the Rolex Oyster Perpetual 31 277200-0005?
For the Rolex Oyster Perpetual 31 277200-0005 with its turquoise dial, the most suitable straps are vegetable-tanned alligator belly for formal occasions, fine-grain calf leather for everyday wear, or shell cordovan for those seeking a natural patina over time. In all cases, the strap must respect the 16mm lug width, with buckle and keeper proportionate to the 31mm case.
How do you change the strap on a Rolex Oyster Perpetual 31 277200-0005?
To replace the strap on the Rolex Oyster Perpetual 31 277200-0005, a fine-tipped spring bar tool is required. Compress the spring bar ends towards the lugs using the tool tip, then slide the strap out laterally. It is advisable to work on a soft surface to avoid scratching the case, and to use replacement spring bars with the correct diameter and length for Rolex lugs.
Are there aftermarket straps compatible with the Rolex Oyster Perpetual 31 277200-0005?
Yes, high-quality aftermarket straps compatible with the Rolex Oyster Perpetual 31 277200-0005 are available. The essential requirements are a 16mm lug width and spring bars of the correct diameter and length for Rolex lugs. Milano Straps offers a curated selection of handcrafted 16mm straps — in leather, NATO and rubber — designed to respect the proportions of the 31mm case without altering its original aesthetic.
How long does a leather strap last on a Rolex Oyster Perpetual 31 277200-0005?
The lifespan of a leather strap depends on the hide quality, tanning method and daily use. A first-quality vegetable-tanned alligator strap, with regular wear and proper maintenance (periodic conditioning, rotation with other straps), can last between three and seven years while retaining its structure and patina. Calf leather tends to soften sooner, while shell cordovan offers the greatest long-term abrasion resistance. Prolonged exposure to water and perspiration will significantly reduce the service life of any leather strap.
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

