Technical Archive

Certina
DS First c0142171101101— lug 17mm

Certina DS First c0142171101101: 17mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

DS First Lady Ceramic Chrono White Bracelet

Artisanal Note

"This model requires a precise 17mm lug width to preserve the original sartorial balance."

Lug Width

17 mm

The essential strap measurement.

Browse 17mm straps →

Reference

c0142171101101

Movement

ETA caliber 251.471 Hours, Small Seconds, Minutes | Date | Chronograph

The Heritage

The Certina DS First reference C0142171101101 is powered by the ETA 251.471 caliber featuring hours, minutes, small seconds, date and chronograph functions. The watch features 17mm lugs and belongs to the Swiss brand's DS First collection. The movement offers chronograph complications integrated into the case design.

FAQ

What is the exact lug width of the Certina DS First c0142171101101?

The lug width of the Certina DS First c0142171101101 is 17 mm, a non-standardised commercial dimension requiring specific straps. To verify compatibility, measure with a digital caliper the distance between the inner edges of the lug, perpendicular to the pass-through hole. Certina's manufacturing tolerance is ±0.2 mm.

Which strap is most suitable for the Certina DS First c0142171101101?

Black alligator or regenerated black calf leather represent the supreme formal choices, owing to aesthetic coherence with the ceramic insert on the bezel. For daily wear, a NATO in Cordura canvas or FKM Viton rubber offers versatility and durability. The lug always requires reinforced fabric to absorb humidity variations.

How do I change the strap on the Certina DS First c0142171101101?

The c0142171101101 is fitted with a standard spring bar. To remove the strap, insert a spring bar removal pin into the lateral orifice of the lug, press gently inward to release spring tension, then extract the strap. Ensure that the ends of the new strap are rectified and chip-free before assembly.

Is there an aftermarket strap compatible with the Certina DS First c0142171101101?

Yes, any strap with a 17 mm lug width is compatible with the c0142171101101, provided it features a standard spring bar attachment. Milano Straps offers a curated range of 17 mm straps in alligator, calf, NATO, and rubber, all ready for shipment and customisable according to your colour preferences.

How long does a leather strap last on a watch like the Certina DS First c0142171101101?

A quality alligator or calf strap, subjected to ordinary use (not exposed to water or excessive perspiration), retains its elastic properties for 5-7 years. Vegetable tanning develops a progressive and desirable patina. Longevity increases if the strap is stored away from direct sunlight and subjected to periodic cleaning with neutral soap and mink oil.