Nivada Grenchen · Antarctic

Strap for Antarctic 35 Black - White Luminova / Stainless Steel / Beads of Rice

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter35 mm
Reference35002M04
FamilyAntarctic
MovementLanderon caliber 21 Hours, Minutes, Seconds
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Antarctic 35002M04

Selected for the 18 mm lug width · workshop selection

All 18 mm straps →

The Antarctic 35002M04, seen from the bench

The Nivada Grenchen Antarctic 35002M04 is a 35 mm stainless steel watch featuring the manual Landeron caliber 21 movement. The case displays three subdials for hours, minutes, and seconds with clear legibility. The 18 mm lug width is proportionally integrated into the design, creating a harmonious ratio between case diameter and strap attachment points that reflects 1960s construction principles. This robust, unplated steel case develops a unique patina over time while maintaining functional elegance.

Frequently asked questions

What is the lug width of the Nivada Grenchen Antarctic 35002M04?

The lug width of the Nivada Grenchen Antarctic 35002M04 is 18 millimetres. This measurement is essential for selecting a compatible strap. Do not confuse lug width with total strap length: lug width refers exclusively to the distance between the spring bar attachments on the case. Always measure directly on the watch, never on a previously installed strap.

Which strap is most suitable for the Nivada Grenchen Antarctic 35002M04?

For the Antarctic 35002M04, we recommend alligator with vegetable tanning for a refined yet understated approach, or vegetable-tanned calf leather if you prefer a softer, more flexible feel. For those wishing to emphasise the sport-military character, a NATO strap in heavy cordura references the historical use of these watches. Rubber is the most practical choice for extended durability. Your selection depends on intended use and desired aesthetic tone.

How do you change the strap on a Nivada Grenchen watch?

To change the strap on your Nivada Grenchen Antarctic 35002M04, you will need a spring bar removal tool. Position the watch face-down on a soft surface. Insert the tool's tip beneath the small spring bar lever, apply gentle pressure to release the tension, then extract the spring bar with your fingers. Repeat on the opposite side. To install the new strap, insert the spring bars into the attachments in sequence, ensuring the spring is fully seated in its recess. Never force—if you encounter resistance, verify the spring alignment.

Are aftermarket straps compatible with the Nivada Grenchen Antarctic 35002M04?

Yes, any strap with an 18mm lug width is compatible with your Antarctic 35002M04. However, the quality of artisanal construction significantly influences comfort and longevity. Straps crafted from quality leather develop a patina over time that synchronises with the natural ageing of the case steel. Always verify tanning method and material to ensure aesthetic harmony with your case and dial.

How long does a natural leather strap with vegetable tanning last?

A naturally tanned leather strap with vegetable tanning, if properly maintained, typically lasts 3-5 years of daily wear before requiring replacement or professional restoration. Longevity depends on ambient humidity, wear frequency, and care practices: avoid prolonged exposure to stagnant fresh water and extreme moisture, and occasionally apply a natural leather conditioner. Vegetable-tanned leather develops a protective patina naturally, which paradoxically increases its resistance over time. Professionally crafted straps from experienced artisans tend to outlast standard industrial products.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only