Certina · DS First

Strap for DS First Lady Ceramic White 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
ReferenceC0142351101101
FamilyDS First
MovementETA caliber G15.211 hours, minutes, small seconds | date | Chronograph
CaseCeramic, Stainless 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 First C0142351101101

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The DS First C0142351101101, seen from the bench

The Certina DS First C0142351101101 is a contemporary Swiss-made timepiece for women and unisex wear, built on the Double Security philosophy. The 34.80mm case combines ceramic and stainless steel, with ceramic caseback for enhanced impact resistance and thermal stability. It houses the reliable ETA caliber G15.211 movement, featuring hours, minutes, small seconds, chronograph function, and date window. The 18mm lug width is precisely proportioned to the case diameter, creating visual harmony and requiring exact geometric specifications for strap attachment.

Frequently asked questions

What is the lug width of the Certina DS First C0142351101101?

The lug width of the Certina DS First C0142351101101 is 18mm. This measurement is essential when ordering a compatible strap: the strap must fit into the watch's lugs with minimal tolerance. Always verify this dimension before purchasing an aftermarket strap, as an incorrect width will not attach properly to your timepiece.

Which strap do you recommend for the Certina DS First?

For the Certina DS First, we recommend three primary options: an alligator strap with vegetable tanning for refined aesthetics; Italian calf leather with natural patina for daily wear and visible ageing over time; a NATO strap in heavyweight fabric to emphasise the sports character of the ceramic case. Your choice should reflect your lifestyle and the watch's dial colour.

How do you change the strap on an 18mm lug width watch?

To change the strap on an 18mm lug width watch, use a spring bar removal tool to compress the elastic pins securing the strap to the case lugs. Position the tool gently in the lower groove of the pin, compress it and slide the old strap downward. Repeat with the new strap, ensuring the pins click correctly into their housings. Avoid forcing: a gentle operation requires less than one minute per lug.

Is an aftermarket strap compatible with the Certina DS First C0142351101101?

Yes, an 18mm aftermarket strap will be compatible with the Certina DS First C0142351101101, provided its spring bars have the correct geometry for the case's integrated lugs. The strap must measure 18mm at the base of the pins. Bespoke artisanal straps offer the finest compatibility and allow customisation in material and finish.

How long does a leather strap last on a watch like the Certina DS First?

The lifespan of a leather strap depends on material quality and usage conditions. A high-quality calf leather or shell cordovan strap lasts 3–5 years with daily wear. An alligator strap with vegetable tanning can exceed 7–10 years. Frequent exposure to moisture, heat and UV rays reduces longevity. Regular maintenance—gentle cleaning, drying and conditioning with natural wax—significantly extends the strap's life.

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