Rolex
Day-Date 40 228206-0004— lug 20mm
Rolex Day-Date 40 228206-0004: 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 228206-0004The essential strap measurement.
Browse 20mm straps →228206-0004
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 lug width of the Rolex Day-Date 40 228206-0004?
The Rolex Day-Date 40 228206-0004 features a lug width (ansa) of 20mm. This is the horizontal distance between the two suspension lugs located on the sides of the case. Any compatible strap must have exactly this width to ensure proper fitting without gaps or excessive pressure.
Which strap is best suited for the Day-Date 40 in platinum?
Alligator leather remains the natural choice for platinum: its fine grain texture and capacity to develop a mirror-like patina create perfect aesthetic synergy. Shell cordovan offers an almost lacquered density ideal for formal occasions, whilst vegetable-tanned calf is ideal for daily formal wear. The choice depends on intended use and personal colour preference.
How do I change the strap on my Rolex Day-Date 40?
Strap replacement requires a specific tool (spring bar tool) to compress the suspension pins and remove them from the case. If you lack experience, we recommend consulting a professional jeweller or Casati Milano, which offers installation service by appointment in Milan. Our straps include detailed instructions and technical support.
Are aftermarket straps compatible with the Rolex Day-Date 40 228206-0004?
Yes, provided the strap has a 20mm lug width. Artisanal straps of superior quality, crafted in alligator, calf or shell cordovan, are fully compatible and represent an aesthetic alternative to the original Oyster strap. They guarantee the same functionality with opportunities for colour and material customisation.
How long does a leather strap last on a daily-wear wristwatch?
A quality leather strap, subjected to moderate daily use, has an average lifespan of 3–5 years before replacement becomes necessary. Factors such as humidity, perspiration, sun exposure and frequency of use influence longevity. Vegetable-tanned leather straps age with elegance, developing a personal patina. Casati Milano guarantees 18 months against manufacturing defects.
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