Tudor · Style

Strap for Style 28 Stainless Steel / Yellow Gold / Champagne-Diamond / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter28 mm
Reference12103-0004 (aka: M12103-0004)
FamilyStyle
MovementTudor caliber T201 Hours, Minutes, Seconds | Date
CaseYellow Gold, Stainless Steel

Spring bar

Spring bars for Tudor

The right category for this model · choose the 20 mm size

Straps for the Style 12103-0004 (aka: M12103-0004)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Style 12103-0004 (aka: M12103-0004), seen from the bench

The Tudor Style M12103-0004 is a contemporary dress watch featuring a 28mm two-tone case in stainless steel and 18k yellow gold. Powered by the Tudor Caliber T201 movement, it offers essential functions: hours, minutes, seconds, and date. The 20mm lug width accommodates classic strap proportions suited to the compact case diameter, positioning this model within the refined dress watch category appreciated by discerning collectors.

Frequently asked questions

What is the exact lug width of the Tudor Style 12103-0004?

The lug width of the Tudor Style 12103-0004 is precisely 20mm. This measurement refers to the distance between the lugs (case mounting points) where the watch strap is attached via removable spring bars. Ensure that any strap you select complies with this exact 20mm width specification for proper fit and proportion.

What is the best strap option for the Tudor Style 12103-0004?

The optimal strap choice depends on intended use. For formal wear, alligator in medium brown or black is recommended—its regular texture and fine grain complement the two-tone case finish beautifully. For daily wear, vegetable-tanned leather offers patina development and sustainability. Chromium-tanned calf leather provides practicality and everyday durability. Each material choice maintains the understated elegance of this dress watch.

How do I change the strap on a watch with 20mm lugs?

To change the strap, use a spring bar tool to gently compress the elastic pins at the ends of the lugs. Once compressed, the pins release from the case holes, allowing you to remove the old strap and insert the new one. Ensure the replacement strap is exactly 20mm wide to avoid gaps or overlaps that would compromise the visual proportion of the watch.

Can I use an aftermarket strap on my Tudor 12103-0004?

Yes, any high-quality aftermarket strap is compatible provided it meets the 20mm lug width specification. Artisanal online retailers such as milanostraps.it offer extensive material and finish options in 20mm widths. We recommend brands specialising in premium leathers—alligator, shell cordovan, or quality calf—to maintain the aesthetic standard of your Tudor.

How long does a leather strap last on the Tudor 12103-0004?

Leather strap longevity varies by tanning method and usage frequency. A quality chromium-tanned calf strap typically lasts 2–3 years with daily wear; alligator, being more resilient, endures 4–5 years or longer. Vegetable-tanned leather develops character over time, effectively extending usable lifespan. Casati Milano's bespoke straps include an 18-month warranty 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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only