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Dietrich · OT

Strap for OT-1

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

Lug width

20mm
20 mm strapsAll Dietrich
Lug width20 mm
Case diameter46 mm
ReferenceOTCAO1
FamilyOT
MovementMiyota caliber 82S7 Additional 24 Hour Hand (fixed), Small Seconds, Hours, Minutes
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the OT OTCAO1

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The OT OTCAO1, seen from the bench

The Dietrich OT OTCAO1 is a radical independent watchmaking project featuring an asymmetric 46mm stainless steel case embodying Emmanuel Dietrich's concept of Organic Time. It houses a Miyota 82S7 quartz movement with a 24-hour hand, small seconds, hours and minutes functions. The 20mm lug width allows flexible strap compatibility while maintaining visual proportion between the substantial case geometry and its support. This precise dimension is essential for accessing a wide range of artisanal strap options without compromising the watch's structural lightness and aesthetic coherence.

Frequently asked questions

What is the lug width of the Dietrich OT OTCAO1?

The Dietrich OT OTCAO1 features a 20mm lug width. This dimension provides access to an extensive range of artisanal and commercial straps, allowing complete customisation of the watch's appearance.

Which strap is most suitable for the Dietrich OT OTCAO1?

For the Dietrich OT OTCAO1, we recommend a structured alligator strap or vegetable-tanned leather, which emphasise the organic and sculptural aesthetic of the case. Alternatively, a NATO or rubber strap confers a more sport-oriented character whilst maintaining coherence with the asymmetric geometry.

How do you change the strap on the Dietrich OT OTCAO1?

The Dietrich OT OTCAO1 uses standard lateral spring bars. Using a dedicated spring bar remover tool, carefully extract the pins from the lugs and replace the strap. It is advisable to work on a soft surface to avoid damage to the brushed steel case.

Is the Dietrich OT OTCAO1 compatible with 20mm aftermarket straps?

Yes, the OTCAO1 is fully compatible with any 20mm lug width strap available on the market, whether mass-produced or artisanal. Milano Straps offers an extensive selection of customisable options in this dimension.

How long does a leather strap last on a sporty watch like the OTCAO1?

The lifespan of a leather strap depends on the tanning method and usage. A quality vegetable-tanned strap, with proper maintenance (avoiding prolonged moisture), can last 3-5 years. Shell cordovan models offer greater longevity, developing a precious patina over time.

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