Strap for Oyster Perpetual 34 Stainless Steel / Blue

The lug width of the Rolex Oyster Perpetual 34 ref. 124200-0003 is 18mm. This measurement is taken between the lugs using a digital calliper, excluding the lateral shoulders. It is the key parameter for selecting a correctly fitting strap with no lateral play.

For the turquoise dial of the 124200-0003, the most suitable materials are Louisiana alligator leather for a formal look, vegetable-tanned calf leather for everyday versatility, and shell cordovan for those who appreciate a developing patina over time. The 18mm lug width also accommodates rubber straps well for a more sporting application.

Strap removal on the Oyster Perpetual 34 is carried out via the spring bars integrated into the lugs. A dedicated spring bar tool is inserted into the lateral hole of the lug to compress and release the bar. No case opening is required. The operation can be performed independently with the correct tools, or entrusted to a watchmaker or the Casati Milano atelier.

Yes, the aftermarket offers a wide range of straps compatible with the 18mm lug width of the Rolex Oyster Perpetual 34. Casati Milano produces bespoke leather straps with an 18mm attachment, also available with a steel deployant clasp. It is important to ensure that the spring bars are sized at 18mm and that the strap ends are shaped to follow the curvature of Rolex lugs.

The lifespan of a leather strap depends on the material, frequency of wear and level of care. A quality alligator or vegetable-tanned calf strap, conditioned regularly and stored dry, can last between 3 and 7 years with daily wear. Shell cordovan typically offers greater longevity due to the density of its fibre structure. Casati Milano provides an 18-month guarantee against manufacturing defects.