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 width17 mm
Case diameter31 mm
Reference277200-0004 (aka: M277200-0001)
FamilyOyster Perpetual 31
MovementRolex caliber 2232 hours, minutes, seconds | chronometer
Year2020
CaseStainless Steel

Recommended spring bar

Spring bars Datejust 31 steel — 17mm × 1.8mm blind

Technical match for lug width and diameter · lug 17 mm · Ø 1.8 mm · closed lugs

All Rolex spring barsOpen →

The Oyster Perpetual 31 277200-0004 (aka: M277200-0001), seen from the bench

The Rolex Oyster Perpetual 31, reference 277200-0004, features a 31.00 mm Oystersteel case with a turquoise lacquered dial, applied indices, and Chromalight hands. The Rolex 2232 quartz movement, with a Syloxi silicon oscillator, is COSC-certified as a chronometer with precision of ±0.07 seconds per day. Water-resistant to 100 meters with screw-down caseback. Lug width is 16 mm—not 17 mm or 18 mm. The watch ships with a Jubilee or Oyster five-link Oystersteel bracelet with factory deployant clasp, but accepts aftermarket 16 mm straps for aesthetic versatility.

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.

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