Technical Archive

Nivada Grenchen
Antarctic 35005M04— lug 18mm

Nivada Grenchen Antarctic 35005M04: 18mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Antarctic 35 White - White Luminova / Stainless Steel / Beads of Rice

Artisanal Note

"This model requires a precise 18mm lug width to preserve the original sartorial balance."

Technical Specifications

Nivada Grenchen 35005M04
Lug Width
18 mm

The essential strap measurement.

Browse 18mm straps →
Reference

35005M04

Movement

Landeron caliber 21 Hours, Minutes, Seconds

The Heritage

The Nivada Grenchen Antarctic represents a reissue of a historic model of the Swiss brand. It is powered by the mechanical Landeron 21 caliber with hour, minute and second indication. The lugs measure 18mm in width.

FAQ

What is the lug width of the Nivada Grenchen Antarctic 35005M04?

The lug width of the Nivada Grenchen Antarctic 35005M04 is 18mm. This measurement should be taken with a ruler positioned between the two metal lugs of the case where your current strap attaches. At 18mm, this is a generous standard that allows for a wide selection of aftermarket straps without requiring any case modifications.

Which strap would you recommend for the Nivada Grenchen Antarctic 35005M04?

For the Antarctic 35005M04, we recommend vegetable-tanned calf leather (Taurillon) for understated elegance, Nile crocodile for robustness and aesthetic refinement, or NATO straps in heavy cordura for emphasizing the model's technical and military character. Your choice depends on lifestyle: leather for varied occasions, NATO for daily durability. Regardless of your selection, always verify the presence of a secure deployante clasp.

How do I change the strap on my Nivada Grenchen Antarctic 35005M04?

The strap is changed by removing the spring bars. Use a dedicated spring bar tool to gently push the lug inward and release it from its housing. Once both lugs are free, remove the old strap and insert the new one. Proceed with care to avoid scratching the case: the brushed steel finish on your Antarctic is susceptible to micro-scratches.

Are 18mm aftermarket straps compatible with the Nivada Grenchen Antarctic 35005M04?

Yes, any strap with 18mm lugs is compatible with the Antarctic 35005M04. Milanostraps.it offers a curated selection of handcrafted 18mm straps in leather, NATO, and rubber—all ready to ship and customizable to your preferences. Always verify that your chosen strap features compatible lugs (universal standards) and adequate durability for your intended use.

What is the lifespan of a leather strap on a Nivada Grenchen Antarctic 35005M04?

The lifespan of a leather strap depends on material quality and usage conditions. A vegetable-tanned Taurillon calf strap, worn daily, typically lasts 18–24 months. Natural leather ages gracefully, developing patina and character over time. To extend longevity, avoid prolonged moisture exposure and apply a water-repellent conditioner every 3–4 months. Nile crocodile offers superior durability, lasting up to 3 years under intensive daily wear.