Eterna · Contemporary

Strap for Adventic Quartz Big Date Black / Strap

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter41 mm
Reference2971.41.46.1327
FamilyContemporary
MovementRonda caliber 6004.B Hours, Minutes, Small Seconds | Big Date
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 Contemporary 2971.41.46.1327

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Contemporary 2971.41.46.1327, seen from the bench

The Eterna Contemporary reference 2971.41.46.1327 is equipped with the Ronda 6004.B quartz caliber with hour, minute, small second and big date functions. The movement offers a classic configuration with a three-hand dial and a big date complication. The Contemporary line represents the modern collection of the Swiss brand Eterna.

Frequently asked questions

What is the lug width of the Eterna Contemporary 2971.41.46.1327?

The Eterna Contemporary 2971.41.46.1327 features a 20mm lug width. This measurement represents the distance between the lugs on the case and is essential for selecting a compatible strap. Always verify the measurement using a calliper positioned perpendicularly to the lugs, with the strap already seated in the contact space.

Which strap is best for the Eterna Contemporary 2971.41.46.1327?

The choice depends on intended use and aesthetic preference. For formal occasions, an alligator strap with vegetable tanning offers sophistication and develops patina over time. A grained calf leather provides excellent durability for daily wear. A canvas NATO strap ensures versatility and practicality. For aquatic or sporting activities, fluoroelastomer rubber is the most appropriate solution. The stainless steel case pairs seamlessly with all these materials without chromatic conflict.

How do I change the strap on the Eterna Contemporary 2971.41.46.1327?

The strap is removed by unscrewing the lateral pins (spring bars) with a dedicated tool (spring bar tool). Position the watch on a soft base with the dial facing downward to protect the crystal. Insert the tool into the lug hole, gently press to compress the internal pin mechanism, and slide out the old strap. Repeat on the opposite lug. Installation of the new strap follows the reverse process: align the pins with the lugs and insert them until you hear or feel a distinct click.

Can I use a third-party aftermarket strap compatible with the Eterna Contemporary 2971.41.46.1327?

Yes, provided the lug width is exactly 20mm. High-quality artisanal straps featuring vegetable-tanned leather or premium rubber are fully compatible and often superior to OEM straps in durability and aesthetics. Ensure the strap is manufactured with certified materials and non-toxic finishes. The Eterna Contemporary, being a modern timepiece, readily accepts renewal through varied straps over time.

How long does a leather strap last on the Eterna Contemporary 2971.41.46.1327?

Longevity varies according to leather quality and intensity of use. An alligator strap with vegetable tanning typically lasts 5–8 years of daily wear, developing an appealing patina. A grained calf strap maintains integrity for 4–6 years. A shell cordovan strap, if available, can exceed 10 years owing to fibre density. Maintenance is essential: condition the leather every 12–18 months with natural oils, avoid prolonged immersion (the 41mm stainless steel case facilitates accidental immersion), and rotate between two or three straps to distribute stress.

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