Omega · Trésor

Strap for Omega Trésor 428.57.26.60.04.004

The Mini Trésor Quartz 26 Moonshine Gold - Diamond / White Enamel takes 13 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

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Lug width13 mm
Case diameter26 mm
Reference428.57.26.60.04.004 (aka: 42857266004004)
FamilyTrésor
MovementOmega caliber 4061 Hours, Minutes
Year2022
CaseMoonshine Gold

Spring bar

Spring bars for Omega

The right category for this model · choose the 13 mm size

What I'm asked about the Omega Trésor 428.57.26.60.04.004

What strap size does the Omega Trésor 428.57.26.60.04.004 take?

The Omega Trésor 428.57.26.60.04.004 needs 13 mm between the lugs. It's the size I've been fitting on it for years.

Can the strap on the Omega Trésor 428.57.26.60.04.004 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the Omega Trésor 428.57.26.60.04.004?

Yes, in 13 mm leather. On a 26 mm case a calf strap works every day; if you want something more, alligator.

Which strap do you recommend for the Omega Trésor 428.57.26.60.04.004?

A 13 mm calf strap, for every day. I don't keep this size ready in the catalogue: I make it to measure. If you'd rather have something built on your wrist, the Casati atelier.

The Trésor 428.57.26.60.04.004, seen from the bench

The Omega Trésor reference 428.57.26.60.04.004 is equipped with the Omega 4061 caliber with hour and minute indication. The model has 13mm lugs and represents the contemporary interpretation of the Trésor line of the Swiss brand. The case maintains the classic proportions of the collection with carefully crafted details.

Frequently asked questions

Which strap material works best with the Moonshine Gold of the Trésor?

For Moonshine Gold, alligator leather represents the most refined choice: the natural skin texture creates a direct visual dialogue with the distinctive luminosity of this proprietary Omega alloy. Vegetable-tanned calf leather is an excellent alternative, offering uniform texture and extraordinary ageing capacity. Shell cordovan adds density and durability, whilst silk or linen NATO straps in taupe grey or beige provide a more versatile approach without compromising the watch's sophisticated aesthetic.

Are there compatible aftermarket straps available for the 428.57.26.60.04.004 model?

Yes. Although the Trésor is a compact timepiece (26 mm), the enthusiast community has developed several aftermarket options for the 13 mm lug width. Milano Straps offers a collection of handcrafted, compatible straps in various materials—alligator, calf, shell cordovan—with customisable finishes and colours. Each strap is made to order, allowing you to select not only the material but also stitching colour and, if desired, embroidered initials.

How long does a leather strap last on a watch like the Trésor if worn daily?

Strap longevity depends on the material, tanning method, and intensity of use. Vegetable-tanned calf can last 3-5 years with daily wear thanks to its natural density. Alligator, more delicate, requires greater care and may last 2-4 years with frequent use. Shell cordovan is among the most durable, with potential lifespan of 5-7 years. All straps benefit from periodic rotation—owning 2-3 straps and alternating them significantly extends their useful life—and from regular maintenance using leather-specific balms.

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 →

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

The atelier's website: casatimilano.com