Strap for Datejust 31 Stainless Steel Domed Diamond / Oyster / Pink MOP

The lug width of the Rolex Datejust 31 178344-0070 is 16mm. This measurement represents the distance between the two metal pins (spring bars) on which the strap is mounted. To verify, insert a ruler horizontally through the strap lugs: the distance between the outer pins must be exactly 16mm.

For the Datejust 31 178344-0070 with mother-of-pearl dial and white gold Rolesor case, we recommend premium alligator leather straps, particularly in cognac or black tones. Vegetable-tanned calf leather represents an elegant alternative that develops patina over time. For sporty use, NATO or FKM rubber straps maintain aesthetics whilst ensuring practicality.

To change the strap on your Datejust 31, you must remove the original strap by extracting the lateral pins using a spring bar remover tool. The new 16mm strap is inserted by aligning its holes with the case lugs. We recommend having a certified watchmaker perform this operation to avoid damage to the pins or case.

Yes, premium artisanal aftermarket straps are fully compatible. Milano Straps offers a curated selection of 16mm straps in various materials (alligator, calf, shell cordovan, textiles) made to order. The critical requirement is that the lug width be exactly 16mm to ensure perfect fit.

A high-quality leather strap, such as alligator or shell cordovan, typically lasts 3-5 years with daily wear, depending on water and perspiration exposure. Vegetable-tanned calf may last 2-4 years but develops a desirable patina. Periodic replacement is not a flaw—it is part of the nature of genuine leather. Milano Straps provides an 18-month warranty against manufacturing defects.