Technical Archive

Certina
DS Action C013.417.21.057.01— lug 21mm

Certina DS Action C013.417.21.057.01: 21mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

DS Action Chronograph Orange

Artisanal Note

"This model requires a precise 21mm lug width to preserve the original sartorial balance."

Technical Specifications

Certina C013.417.21.057.01
Lug Width
21 mm

The essential strap measurement.

Browse 21mm straps →
Reference

C013.417.21.057.01

Movement

ETA caliber G10.211 Hours, Minutes, Small Seconds | Date | Chronograph, Rattrapante

The Heritage

The Certina DS Action reference C013.417.21.057.01 is equipped with the ETA G10.211 quartz movement with chronograph and split-second functions. The watch features hour, minute, small seconds, and date indications. Lug width 21mm for the strap.

FAQ

What is the lug width of the Certina DS Action C013.417.21.057.01?

The Certina DS Action C013.417.21.057.01 features a lug width of 21 millimetres. This measurement is taken between the two metal terminals (the case lugs) and determines compatibility with bespoke straps. A digital calliper allows precise verification of the internal distance between the lug attachments.

Which strap material suits the Certina DS Action best?

The Certina DS Action's robust, sports-oriented character is enhanced by alligator straps in burgundy or cream tones, balancing the case's instrumental nature; burgundy shell cordovan for those seeking vintage patina and aesthetic depth; vegetable-tanned calf leather in tobacco shades for summer hiking; dark navy NATO straps for tactical inclination. The choice depends on primary usage and personal wrist narrative.

How do you change the strap on a 21mm lug width watch?

Every Certina with 21mm lugs is equipped with spring bars that secure the strap to the case lugs. To change: depress the spring mechanism using a dedicated spring bar tool towards the case centre, remove the old strap, align the new strap's holes with the bars, and reinsert the spring until you hear the locking click. A craftsman can assist if uncertain.

Is an aftermarket strap compatible with the Certina DS Action C013.417.21.057.01?

Yes. Any strap with a 21-millimetre lug width is compatible with the DS Action, regardless of manufacturing brand. High-quality bespoke straps provide superior longevity and aesthetics compared to original straps, especially when crafted from vegetable-tanned leather or noble hides such as alligator and shell cordovan.

How long does a leather strap last on a 21mm lug width timepiece?

A premium leather strap (alligator, shell cordovan, vegetable-tanned calf) typically lasts 3–5 years with daily wear, depending on humidity, perspiration, and sun exposure. Vegetable tanning ages elegantly, developing patina and characteristic creasing. Regular maintenance (gentle cleaning, conditioning with natural oils) extends longevity to 7–8 years. Rubber and synthetic straps tolerate aquatic exposure better but require more frequent replacement.