Tudor · Royal

Strap for Royal Date 34 Stainless Steel / Yellow Gold / Black - Roman

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter34 mm
Reference28403-0003 (aka: M28403-0003)
FamilyRoyal
MovementTudor caliber T601 Hours, Minutes, Seconds | Date
CaseYellow Gold, Stainless Steel

Recommended spring bar

Modern Tudor 22mm spring bars — factory specification

Technical match for lug width and diameter · lug 22 mm · Ø 1.8 mm

All Tudor spring barsOpen →

Straps for the Royal 28403-0003 (aka: M28403-0003)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Royal 28403-0003 (aka: M28403-0003), seen from the bench

The Tudor Royal 28403-0003 is a 34 mm stainless steel and yellow gold watch featuring the caliber T601 automatic movement with a 70-hour power reserve. The bicolor case combines 904L stainless steel with 18-karat yellow gold, offering 100 meters of water resistance. The dial includes hours, minutes, seconds, and a date window at 3 o'clock. The 22 mm lug width ensures proper proportions on the wrist.

Frequently asked questions

What is the lug width of the Tudor Royal 28403-0003?

The lug width of the Tudor Royal 28403-0003 is 22 millimetres. This specification is crucial when selecting a compatible strap. To verify it, measure the internal distance between the lug shoulders using a digital calliper, positioning it perpendicular to the dial. This dimension maintains correct proportions between the 34mm case and the wrist, without excessive overhang.

What is the best strap material for the Tudor Royal 28403-0003?

For the two-tone 28403-0003, dark brown alligator with medium-fine grain is the classic choice, enhancing the warmth of yellow gold whilst creating contrast with steel. Alternatively, shell cordovan offers superior density and a natural patina that evolves over time, guaranteeing longevity beyond ten years. For those preferring vegetable-tanned leather, calf skin delivers progressive patina and sophisticated construction.

How do I change the strap on the Tudor Royal 28403-0003?

The Tudor Royal 28403-0003 uses standard Tudor Spring Bars. To change the strap: remove the watch from your wrist, locate the Spring Bars (small springs between case and strap), use the Spring Bar Tool to apply pressure and slide them out of the lugs, then insert the new strap by snapping the Spring Bar at the ends. Seek professional assistance if inexperienced, to avoid damage to the lugs.

Is the Tudor Royal 28403-0003 compatible with quality aftermarket straps?

Yes, the 28403-0003 accepts any strap with a 22-millimetre lug width and standard Spring Bars. Our milanostraps.it artisanal straps are cut to this specification and guaranteed compatible. Avoid straps with excessive lug width (24mm+), which would create unsightly overhang on a 34mm case.

How long does a leather strap last on the Tudor Royal 28403-0003?

Durability depends on material and usage: vegetable-tanned calf resists 5-7 years with routine maintenance; quality alligator 7-10 years; shell cordovan 10+ years. Exposure to perspiration, humidity fluctuations and direct sunlight accelerates ageing. The Casati Milano atelier provides an 18-month guarantee on all artisanal straps, with regeneration or replacement options available.

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