Elka Watch Co. · D-Series

Strap for D-Series Stainless Steel / Blue / Leather

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

Lug width20 mm
Case diameter41 mm
ReferenceD02-0805
FamilyD-Series
MovementLa Joux-Perret caliber G100 Hours, Minutes, Seconds | Date
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 D-Series D02-0805

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The D-Series D02-0805, seen from the bench

The Elka Watch Co. D-Series D02-0805 is a 40.80 mm stainless steel 316L case watch featuring the Swiss manual-wind La Joux-Perret G100 calibre. With a 20 mm lug width, this Scandinavian-inspired design delivers hours, minutes, seconds, and date functions through precise engineering. The balanced proportions reflect classical watchmaking geometry, where the lug width represents 49% of the case diameter.

Frequently asked questions

What is the exact lug width of the Elka Watch Co. D-Series D02-0805?

The lug width of the Elka D02-0805 is 20 mm. This measurement is precise and non-negotiable: it corresponds to 49% of the case diameter (40.80 mm) following the golden ratio principles of classical watchmaking. When purchasing a compatible strap, verify that the lug-to-lug passage section is exactly 20 mm, otherwise it will not fit correctly into the case lugs.

What is the most recommended strap for the Elka D02-0805?

We recommend alligator leather with vegetable tanning for a formal and timeless pairing. The natural grain creates an elegant material dialogue with the brushed steel case. For a more versatile option, chocolate brown tannin-tanned calf offers that tactile structure ideal for office and casual contexts. For those embracing the sports aesthetic, navy NATO or rubber straps maintain the purity of the Scandinavian design philosophy of the D02-0805.

How do I correctly change the strap on my Elka D02-0805?

The process is straightforward: use a spring bar tool to compress the elastic pin (spring bar) that supports the strap in the case lugs. Position the tool in the pin groove and push gently inward, freeing one end of the strap. Repeat for the other side. When installing the new strap, ensure the passage section diameter is exactly 20 mm and that the pin clicks firmly into the lugs. Never force: correct insertion occurs with moderate pressure and an audible click.

Can I use an aftermarket strap from any brand on the Elka D02-0805?

Yes, provided the strap is designed for a 20 mm lug width. Compatibility is determined solely by the width of the lug passage section: if it is 20 mm, the strap will be compatible regardless of brand. However, we recommend choosing straps with construction quality equivalent to the watch: leather tanned using traditional methods, double stitching, and refined finishes. A poor-quality strap immediately undermines the perceived value and solidity of the D02-0805.

How long does a leather strap last on the Elka D02-0805 if worn daily?

A quality leather strap (alligator, calf, shell cordovan) typically lasts 4–7 years of daily wear before requiring replacement. Durability depends on tanning method, cleaning frequency, moisture exposure, and usage patterns. A vegetable-tanned strap ages visually while maintaining structural functionality for 6–8 years. NATO and rubber straps last longer, 8–12 years, as synthetics or composites resist wear better. Rotating among different straps significantly extends the life of each: wear leather three days weekly, not seven.

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