Milus · LAB 01

Strap for Lab 01 Blue

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

Lug width20 mm
Case diameter40 mm
ReferenceMIL.01.003
FamilyLAB 01
MovementSellita caliber SW200-1 b Hours, Minutes, Seconds
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the LAB 01 MIL.01.003

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The LAB 01 MIL.01.003, seen from the bench

The Milus LAB 01 reference MIL.01.003 features the automatic Sellita SW200-1 caliber with hour, minute, and second indication. The watch has 20mm lugs for the strap. The SW200-1 movement is based on the ETA 2824-2 architecture with a power reserve of approximately 38 hours.

Frequently asked questions

What is the lug width of the Milus LAB 01 MIL.01.003?

The lug width of the Milus LAB 01 MIL.01.003 is 20.00mm. This dimension is crucial when selecting a compatible strap: measure the horizontal distance between the inner edges of both lugs to verify the correct size before purchase.

Which strap is most suitable for the Milus LAB 01 MIL.01.003?

For the LAB 01, we recommend a vegetable-tanned shell cordovan or fine-grain alligator strap, which respect the minimalist aesthetic of the brushed case. For sports use, a 3-ring cotton NATO is an excellent alternative. Avoid highly polished chrome-tanned leathers that create visual conflict with the case's brushed finish.

How do I change the strap on the Milus LAB 01 MIL.01.003?

Use a spring bar tool to gently extract the pin from the first lug. Remove the old strap, align the hole of the new strap with the pin, and insert it into the second lug. Verify that the pin is fully inserted before wearing the watch. If unfamiliar with the process, consult an authorised watchmaker.

Can I use a quality aftermarket strap on this model?

Yes, it is possible to use quality aftermarket straps in 20mm lug width. Ensure the strap is constructed with noble materials (alligator, cordovan, FKM rubber) and respects visual proportion: the strap should not be overly thick and must not create aesthetic tension with the brushed case geometry.

How long does a leather strap last on a Milus LAB 01 watch?

A leather strap's lifespan depends on tanning method and usage. A high-quality vegetable-tanned strap lasts 3-5 years with moderate daily wear, developing natural patina over time. Chrome-tanned leather typically cracks sooner (2-3 years). FKM rubber maintains elasticity for 5-7 years with proper maintenance.

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