Strap for DS-1 Roman

The lug width of the Certina DS-1 C0064071608800 is precisely 20 millimetres. This dimension is determined by the case geometry and the lateral attachment lugs. To verify this measurement on your timepiece, use a digital calliper to measure the internal space between the two metal lugs: the result must correspond exactly to 20 millimetres. This standardisation allows a wide selection of compatible aftermarket straps available in the contemporary market.

The optimal strap depends on intended use and personal preference. For formal-sporting contexts, we recommend a leather strap with vegetable tanning, which develops a fascinating patina over time. For maximum durability and water resistance, an FKM rubber strap with integrated deployante clasp is the technical choice. For aesthetic versatility, a high-density fabric NATO allows rapid changes and suits multiple situations. The stainless steel 39mm case of this Certina particularly enhances contrasts between cool and warm materials, so a cerrated calf leather in neutral tones also conveys elegance without functional compromise.

To change the strap on the Certina DS-1, you must use a spring bar tool (a specific implement to remove the lugs). Position the watch with the case facing upward and locate the metal passant that secures the strap to the lug. Insert the tool's tip into the small lateral hole of the passant to compress the internal spring, then remove the old strap. Repeat the operation on the opposite lug. Subsequently, insert the new strap's passants into the case attachments, ensuring they snap firmly into position. Avoid excessive force to prevent damage to the stainless steel attachments.

Yes, any strap designed for 20 millimetre lugs is compatible with the Certina DS-1 C0064071608800, provided the strap thickness does not exceed the case tolerances. Artisanal straps produced to the 20mm standard fit perfectly into the original attachments. However, it is important to verify that the metal passants integrated into the strap are not deformed and that the edges show no imperfections that might scratch the case. Straps in leather, rubber, NATO fabric or composite materials are all compatible, provided they respect the certified lug width.

The lifespan of a leather strap depends on the material and usage context. A vegetable-tanned leather strap, if subjected to periodic maintenance (gentle cleaning and occasional conditioning), can last 5-10 years before requiring replacement. Cerrated calf or box calf straps, thanks to superior wear resistance, can remain functional for 8-12 years. Frequent exposure to humidity, perspiration and ultraviolet radiation accelerates leather ageing. To extend lifespan, we do not recommend wearing the Certina in prolonged aquatic environments if the strap is leather: in these cases, a rubber strap is the most appropriate and hygienic choice.