Rolex
Day-Date 36 118389-0076— lug 20mm
Rolex Day-Date 36 118389-0076: 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 118389-0076The essential strap measurement.
Browse 20mm straps →118389-0076
Rolex caliber 3155 Hours, Minutes, Seconds | Date, Day | Chronometer
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Day-Date 36
FAQ
What is the exact lug width of the Rolex Day-Date 36 118389-0076?
The Rolex Day-Date 36 reference 118389-0076 features a lug width of precisely 20 millimetres. This dimension has remained unchanged on the President model for decades, ensuring compatibility with artisanal and aftermarket straps meeting the standard. To verify, measure internally between the lugs, perpendicular to the dial, using a digital calliper.
Which strap material best suits the Day-Date 36 white gold?
For the Day-Date 36 118389-0076 in white gold with blue dial, an alligator in navy blue or a cognac-brown calf leather enhance formal elegance. For subtle contrast, black alligator with white stitching or burgundy shell cordovan create aesthetic depth without ostentation. Black rubber remains a contemporary choice for wrists that alternate formal and sports watches.
How do I change the strap on my Rolex Day-Date 36?
Remove the watch from your wrist and locate the lugs: on each side of the case you will find a small spring bar. Apply pressure with a blunt tool (spring bar tool) towards the centre of the watch, releasing the spring. Completely extract the spring bar and old strap. Insert the new 20mm strap, reinsert the spring bar ensuring both ends are firmly locked. If inexperienced, entrust the operation to a certified watchmaker.
Can I use an aftermarket strap on my Rolex Day-Date 36 118389-0076?
Yes, provided the strap strictly respects the 20mm lug width and uses stainless steel spring bars of quality. Artisanal straps in alligator, calf and shell cordovan are compatible and often superior to original Rolex straps in terms of colour customisation and texture. Casati Milano creates custom 20mm straps for the Day-Date, with choice of material, colour and buckle (standard pin or deployante in gold).
What is the durability of a leather strap on the Day-Date 36?
A high-quality artisanal leather strap, with correct vegetable tanning, maintains structural integrity for 5–8 years of daily wear, developing elegant patina over time. Alligator resists for up to 10 years. Shell cordovan, being dense and oily leather, can exceed 12 years. Rubber is virtually indestructible. Longevity depends on frequency of wear, exposure to water and humidity. A well-maintained strap, protected from direct sunlight and stored dry, ages magnificently.
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