Tudor · Royal

Strap for Royal Date 34 Stainless Steel / Black - Roman

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

Lug width20 mm
Case diameter34 mm
Reference28400-0003 (aka: M28400-0003)
FamilyRoyal
MovementTudor caliber T601 hours, minutes, seconds | date
Year2020
CaseStainless Steel

Spring bar

Spring bars for Tudor

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

Straps for the Royal 28400-0003 (aka: M28400-0003)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Royal 28400-0003 (aka: M28400-0003), seen from the bench

The Tudor Royal reference 28400-0003 mounts the automatic caliber T601 with hour, minute, second and date indication. The movement offers the essential functions in a three-hand configuration with date. The case has classic proportions with a traditional winding crown.

Frequently asked questions

What is the lug width of the Tudor Royal 28400-0003?

The Tudor Royal 28400-0003 features a lug width of 20 millimetres. This is the standard dimension in the sport-elegant segment and provides access to a broad catalogue of compatible handcrafted straps in leather and other materials.

What is the best strap for the Tudor Royal 28400-0003?

There is no single 'best' option—rather, several choices depending on usage. For formal elegance: dark alligator or shell cordovan. For daily sport: French calf or NATO. For intense use: rubber or silicone. Your choice reflects the narrative you wish to express through the watch.

How do I change the strap on my Tudor Royal 28400-0003?

The strap is attached via spring bars (small elastic pins) positioned at the lug ends. Use a dedicated tool (spring bar tool) to compress the lateral pins, remove the old strap, and insert the new one by engaging the pins in the new lugs. The process takes seconds and requires no specialist equipment.

Can I use an aftermarket strap on this Tudor?

Yes, any strap with a 20mm lug width is compatible. We recommend verifying the measurement with callipers before purchase. Artisanal straps from milanostraps.it are manufactured to this standard dimension and guarantee precise fit without modifications.

How long does a leather strap last on this watch?

Lifespan depends on tanning method and daily use. Quality vegetable-tanned leather (alligator, shell cordovan) lasts 3–5 years with maintenance. Standard calf lasts 2–4 years. Sun exposure, chlorine, and perspiration reduce longevity. With proper tools and regular cleaning (neutral soap, air dry), you can significantly extend the strap's life.

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