Rolex
Datejust 31 178273-0094— lug 16mm

The lug width (misura ansa) of the Rolex Datejust 31 178273-0094 is exactly 16 millimetres. This dimension is specific to the 31 millimetre version of the Datejust and is smaller than the 20 millimetres found on the 36 model. To verify, remove the current strap and measure the internal width of the metal lug slot. Any replacement strap must respect this specification for perfect compatibility.

For the Datejust 31 178273-0094, materials are best chosen to complement rather than compete with the Rolesor case: alligator leather in vegetable tanning (cognac or dark brown) represents the pinnacle of formal elegance; smooth calf in grey taupe or warm beige provides a neutral foundation that highlights the metals; shell cordovan offers brilliance and water resistance; a cotton or heavy linen NATO creates contemporary contrast for sporty wear. Avoid overly structured or vibrant straps that would unbalance the chromatic equilibrium of the piece.

To change the Datejust 31 strap, proceed as follows: position the watch dial-down on a soft surface; locate the pin connecting the lug to the case; use a small screwdriver or dedicated tool to gently prise the pin until it slides out (typically the pin moves side-to-side, not forwards). Once removed, separate the old strap. Align the new strap's holes with the lugs and reinsert the pin, ensuring it sits flush. If uncertain, consult a professional watchmaker.

Yes, any quality artisanal strap can be fitted to the Datejust 31 178273-0094, provided it respects the 16 millimetre lug width specification. Quality aftermarket straps do not damage the watch and offer the opportunity to customise its appearance without compromise. Milano Straps offers artisanal 16mm straps in various materials (alligator, calf, shell cordovan, rubber) with production defect warranty. A bespoke strap, overseen in-atelier and personalised, represents the pinnacle of quality.

A quality leather strap, crafted from noble materials such as alligator, calf, or shell cordovan, has an average lifespan of 3–5 years under regular daily use. Longevity depends on maintenance (avoid prolonged water exposure), frequency of wear, and climate (humidity accelerates ageing). A shell cordovan strap, owing to the inherent water resistance of the leather, tends to last longer. Milano Straps warrants 18 months against manufacturing defects, and we recommend annual inspection by a watchmaker to verify the integrity of stitching and internals.