Nivada Grenchen
Super Antarctic 32031A20— lug 20mm

The lug width of the 32031A20 model is exactly 20mm. This dimension is determined by the proportion between the 38mm case diameter and the structural integration of the welded lugs. To verify, position a digital calliper perpendicular between the inner lug shoulders, from first contact point.

It depends on intended use: for formal context, an alligator leather strap in black with stainless steel buckle; for daily wear, brown calf leather with vegetable tanning that develops natural patina; for sports or nautical environments, NATO in cotton or FKM rubber with certified water resistance. A deployante buckle distributes case weight more evenly.

The 32031A20 model features lugs welded directly to the case. Mobile spring bars are not applicable: the strap must be secured via pass-through loop (strap with ring that slides over the lug) or via buckle connecting both strap ends. We recommend consulting an expert to avoid scratching the case.

Yes, any strap with 20mm lug width is compatible with the 32031A20, provided the pass-through or fastening system suits the welded lug geometry. Avoid straps exceeding 4mm thickness, which could alter the aesthetic positioning of the case.

A leather strap in noble hide with vegetable tanning maintains structural integrity for 5-8 years of moderate daily use, developing progressive aesthetic patina. FKM rubber straps last 3-5 years; NATO cotton or technical canvas 4-6 years. Durability depends on frequency of use, climatic conditions, and maintenance (avoid prolonged humidity, protect from direct sunlight).