Certina · DS-6

Strap for DS-6 Lady Stainless Steel - Ceramic / Black / Bracelet

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter35 mm
ReferenceC039.251.11.057.00
FamilyDS-6
MovementETA caliber F05.412 hours, minutes, seconds
Year2022
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 DS-6 C039.251.11.057.00

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The DS-6 C039.251.11.057.00, seen from the bench

The Certina DS-6 C039.251.11.057.00 is a 35 mm stainless steel 316L watch featuring the ETA F05.412 Swiss quartz movement with hour, minute, and second hands, accurate to ±10 seconds per month. The 18 mm lug width accommodates a wide selection of contemporary straps. This model exemplifies 1960s Swiss watchmaking design with functional proportions and patina development through daily wear.

Frequently asked questions

What is the lug width of the Certina DS-6 C039.251.11.057.00?

The lug width of the Certina DS-6 C039.251.11.057.00 is 18 millimetres. This measurement corresponds to the internal distance between the spring bars that attach the strap to the case. A compatible strap must respect this dimension precisely to ensure correct positioning and avoid unacceptable lateral play.

Which strap do you recommend for the Certina DS-6 C039.251.11.057.00?

For the Certina DS-6 C039.251.11.057.00, we recommend an alligator or vegetable-tanned calf leather strap in dark brown or black. These materials enhance the nobility of the stainless steel case and develop natural patina over time. For daily wear, a Cordura canvas NATO or waterproof rubber represent robust alternatives without aesthetic compromise.

How do I change the strap on the Certina DS-6 C039.251.11.057.00?

To change the strap, position the watch on a soft surface. Using a spring bar removal tool or small screwdriver, gently push the pin inward from the case. Once the first pin is removed, extract the strap. Reverse the procedure with the new strap: insert the pin from one side, align the strap and push the pin until it locks completely. Avoid hammers or inadequate tools that could damage the case.

Can I use an aftermarket strap compatible with the Certina DS-6 C039.251.11.057.00?

Yes, any high-quality 18mm lug width strap is perfectly compatible. Artisanal leather, alligator, shell cordovan, or NATO straps often guarantee superior finishing and durability compared to standard OEM straps. Ensure that the buckle or deployant clasp is proportionate to the 35mm case diameter: avoid oversized buckles that would create visual imbalance.

What is the lifespan of a leather strap on the Certina DS-6 C039.251.11.057.00?

A high-quality artisanal leather strap with vegetable tanning lasts 3-5 years of daily wear, provided regular maintenance. Longevity depends on humidity exposure, cleaning frequency, and tanning method. Vegetable-tanned leather, while requiring more care than rubber, develops fascinating patina and remains repairable or renewable. Investing in premium leather compensates over time compared to mass-produced synthetic straps.

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