Strap for Datejust 31 Yellow Gold / Diamond / MOP / President

The Rolex Datejust 31, reference 278288rbr-0006, features a 16mm lug width. This is the precise measurement between the strap lugs on the Yellow Gold case. When replacing the strap, ensure it matches exactly 16mm, measured on the inside of one lug to the other, at the point where the spring bar passes through the case.

For the Datejust 31 in Yellow Gold with diamond-set dial, alligator leather represents the most elegant choice: its natural texture and consistent grain create aesthetic continuity with the case's precious nature. High-quality alternatives include vegetable-tanned calf leather, which develops patina over time, and shell cordovan, renowned for durability and natural lustre. Your choice depends on intended use: daily wear (calf), formal occasions (alligator), or versatile styling (cordovan).

Strap replacement requires a spring bar tool to remove the elastic pins securing the strap to the lugs. Position the tool in the pin's groove, gently compress it towards the case, and the pin will retract. Extract the old strap, then align the new one with the lugs. Reinsert the pin by applying steady pressure until it clicks into position. If you prefer to avoid risk, entrust the operation to an authorised Rolex service centre.

Yes, you can use quality aftermarket straps in 16mm lug width. Ensure the strap is crafted by specialist artisans, featuring premium leather (alligator, calf, shell cordovan) and hardware appropriate for a luxury timepiece. Custom straps from Casati Milano, for instance, are handcrafted to order and guaranteed for 18 months against manufacturing defects, offering a balance between artisanal quality and technical compatibility.

Leather strap durability varies based on material and usage patterns. Alligator and shell cordovan, if properly cared for and worn intermittently, maintain excellent functionality for 4–6 years. Calf leather, being more delicate, typically requires replacement after 2–3 years of daily wear. Ageing is not a defect but part of the leather's natural evolution: the patina developed enhances the strap's character. Store your strap away from direct sunlight and clean it with a soft cloth when soiled.