Nivada Grenchen
Antarctic 35001M20— lug 18mm

The lug width of the Nivada Grenchen Antarctic 35001M20 is precisely 18 millimetres. This dimension is non-negotiable: the strap must fit perfectly between the lugs. To verify, measure the space between the two lugs with a calliper or flexible ruler.

For the Nivada Grenchen Antarctic 35001M20, we recommend straps in vegetable tanning, alligator leather, or robust NATO fabric. Vegetable-tanned leather develops natural patina with conscious ageing; alligator guarantees structure and durability; NATO fabric is ideal for intensive use or humid environments. The choice depends on intended use and aesthetic preference.

To change the strap: position the watch with the lug facing towards you, locate the pass-through holes on the old strap, use a spring bar tool to gently compress the pin, remove the old strap, insert the new strap aligning the holes to the pins, release the pin and verify tightness. A delicate operation requiring care and precision.

Yes, any strap with an 18mm lug width is compatible with the Nivada Grenchen Antarctic 35001M20. High-quality artisanal straps (leather, alligator, shell cordovan, NATO) fit perfectly with the stainless steel case. Always verify that the strap is certified 18mm to avoid fitting issues.

A high-quality leather strap, with vegetable tanning or alligator, typically lasts 3-5 years with regular daily use. Durability depends on sun exposure, humidity and frequency of use. Proper maintenance—periodic cleaning and protection from extreme environments—significantly extends strap life. Leather ages nobly, not merely degrading.