Nivada Grenchen
Super Antarctic 32031A17— lug 20mm

The lug width of the Nivada Grenchen Super Antarctic reference 32031A17 is 20 millimetres. This measurement is standard for mid-sized sports watches and is the fundamental parameter for selecting a compatible strap. It is important to measure the lugs correctly: the internal distance between the two lugs must correspond exactly to 20mm for the strap to adhere firmly without excessive play.

The ideal strap depends on the intended use and desired aesthetic. To emphasise the instrumental character and avionic heritage, we recommend vegetable-tanned leather in dark natural brown or black, which pairs perfectly with the satin-finished stainless steel case. For sports or nautical use, a NATO fabric strap offers practicality and rapid changes. For maximum elegance, structured shell cordovan represents the pinnacle of refinement, whilst a modern rubber strap guarantees daily practicality and water resistance.

Changing the strap on a 20mm lug width watch requires simple tools: a quality spring bar tool or a very thin flat scraper. Position the watch on a stable surface, locate the hole on the lug where the strap passes, insert the tool in the hole to compress the internal spring, and gently extract the pin. Repeat on the other side, then insert the new strap by aligning the passants and reinserting the pins until they click into place. If you lack experience, consult a watchmaker to avoid damaging the case.

Yes, any quality strap with a 20mm lug width is compatible with the Super Antarctic 32031A17. The important thing is to verify exactly the lug width: if the strap is designed for 20mm, the passants will enter the lugs correctly. We recommend quality artisanal straps made from noble materials such as vegetable-tanned leather, structured alligator, shell cordovan or authentic NATO fabric. An artisanal strap transforms the wearing experience and further enhances the watch.

The lifespan of a leather strap depends on intensity of use, quality of craftsmanship and tanning method. An artisanal vegetable-tanned leather strap, with moderate use and periodic maintenance, can last 3-5 years before requiring replacement. Vegetable-tanned leather develops a natural patina over time, improving aesthetically. A shell cordovan strap is more resistant and can last 5-7 years. Prolonged exposure to water, sweat and humidity reduces lifespan. Simple maintenance—gentle cleaning, drying after use, avoiding prolonged soaking—significantly extends strap life. A NATO or rubber strap lasts longer, up to 10 years, but does not age with the same aesthetic appeal as leather.