Rolex
Day-Date 40 228239-0049— lug 20mm
Rolex Day-Date 40 228239-0049: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Rolex 228239-0049The essential strap measurement.
Browse 20mm straps →228239-0049
Rolex caliber 3255 Hours, Minutes, Seconds | Date, Day | Chronometer
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Day-Date 40
FAQ
What is the exact lug width of the Rolex Day-Date 40 reference 228239-0049?
The lug width of the Rolex Day-Date 40 228239-0049 is precisely 20mm. This measurement represents the distance between the centres of the two opposing lugs. Verification of this dimension is essential before ordering an aftermarket strap, as even a 0.5mm variance results in poor fit and risks case damage during installation.
Which strap material do you recommend for the Day-Date 40 in white gold?
For the Day-Date 40 228239-0049 in white gold, alligator remains the traditional ideal choice: its regular texture creates visual harmony with the neutral tone of white gold. Shell cordovan offers extraordinary longevity and unique patina development over time. Grained calf is perfect for daily wear. Vegetable-tanned leather represents the conscious choice for those valuing artisanal sustainability.
How should one correctly change the strap on a Day-Date 40?
Strap changing requires specific tools: a spring bar remover (dual-pronged tool) or a watchmaker's knife. Position the watch on a soft pad, locate the small hole beneath the lug, insert the tool to compress the internal spring of the spring bar, withdraw the bar and strap. Reverse the procedure for installing the new strap. If inexperienced, entrust this work to a professional: the risk of scratching the case is significant.
Is a high-quality aftermarket strap compatible with the Day-Date 40 reference 228239-0049?
Yes, provided it is manufactured with a precisely 20mm lug width. Artisanal quality straps (alligator, calf, shell cordovan with vegetable tanning) offer personalisation and patina development that OEM Rolex straps do not permit. A warranty against manufacturing defects (minimum 18 months) is a reliability criterion. Avoid generic straps: construction quality and material selection directly impact longevity and the formal presentation of your Day-Date.
What is the expected lifespan of a quality leather strap for the Day-Date 40?
An alligator, calf, or shell cordovan strap manufactured with vegetable tanning and manual construction typically lasts 4-7 years with daily wear. Shell cordovan, owing to its natural fibrous structure, frequently exceeds 10 years. Longevity depends on: frequency of use, exposure to humidity and perspiration, periodic maintenance (cleaning with dry cloth, rapid drying after water contact), and occasional application of leather balm. The patina that develops is not deterioration, but aesthetic enrichment of the leather.
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.
Request an appointment →By appointment only · Milan
The atelier's website: casatimilano.com