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Certina · DS First

Strap for DS First Lady Ceramic Rose

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

Lug width

18mm
18 mm strapsAll Certina
Lug width18 mm
Case diameter35 mm
ReferenceC0142353705100
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

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Straps for the DS First C0142353705100

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The DS First C0142353705100, seen from the bench

The Certina DS First C0142353705100 is a contemporary evolution of a technical icon from the 1950s, featuring a ceramic and stainless steel case. The 34.80 mm diameter case houses an ETA G15.211 manual caliber movement with hours, minutes, small seconds, date window, and chronograph function. The 18 mm lug width is ergonomically calibrated for this case size and represents a specific constructive constraint of this model. Ceramic material provides superior scratch and thermal resistance compared to traditional satin steel.

Frequently asked questions

What is the lug width of the Certina DS First C0142353705100?

The lug width of the Certina DS First C0142353705100 is 18 millimetres. This measurement represents the distance between the two spring bars that attach the strap to the lugs of the watch case. Accurate measurement of the space between the spring bars is essential to ensure mechanical compatibility with aftermarket straps. Any strap designated for 18mm will be suitable for this model.

Which strap is recommended for the Certina DS First C0142353705100?

For the Certina DS First C0142353705100, we recommend an alligator or vegetable-tanned shell cordovan strap for formal occasions, fine-grained calf leather for daily versatility, or FKM rubber for aquatic and sports environments. A canvas NATO strap in waxed finish represents the most practical and versatile option. The choice depends on intended usage and personal aesthetic preferences.

How do you change the strap on the Certina DS First C0142353705100?

To change the strap, you must remove the 18mm spring bars connecting the current strap to the watch lugs. Using a spring bar tool, gently press the internal spring downward and slide the bar out of its seat. Repeat on the other side. Insert the new strap, aligning it with the seats, and push the spring bars until you feel the locking click. If you do not possess a spring bar tool, a professional watchmaker can perform this operation within minutes.

Is the Certina DS First C0142353705100 compatible with quality aftermarket straps?

Yes, the Certina DS First C0142353705100 is fully compatible with quality aftermarket straps. The standard lug width of 18mm allows the use of artisanal leather, rubber, and canvas straps, provided the internal width is precisely 18 millimetres. Many watchmakers and leather craftsmen produce custom straps for this dimension, offering superior variety of materials and finishes compared to the original strap.

What is the lifespan of a leather strap on the Certina DS First C0142353705100?

A high-quality leather strap (alligator, shell cordovan, or vegetable-tanned calf) has a lifespan of between 3 and 7 years, depending on usage frequency, cleaning habits, and storage conditions. Leather exposed to regular perspiration, moisture, and sunlight develops a natural patina and progressively thins over time. An FKM rubber strap typically lasts 5–10 years, whilst a waxed-canvas NATO strap can exceed 10 years if properly maintained.

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