Technical Archive

Eterna
Adventure 1222.41.41.0217— lug 20mm

Eterna Adventure 1222.41.41.0217: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

KonTiki Date Black / Bracelet

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Eterna 1222.41.41.0217
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

1222.41.41.0217

Movement

Sellita caliber SW200-1 a Hours, Minutes, Seconds | Date

The Heritage

The Eterna Adventure 1222.41.41.0217 is a 42mm stainless steel field instrument watch from Grenchen's Swiss watchmaking tradition. It features a tonneau case, sober dial with applied indices, and a Sellita SW200-1 automatic caliber with 28,800 vph and 38-hour power reserve. The 20mm lug width reflects the case proportions and ensures compatibility with robust, reliable straps designed for this specific measurement.

FAQ

What is the lug width of the Eterna Adventure 1222.41.41.0217?

The lug width of the Eterna Adventure 1222.41.41.0217 is 20mm. This measurement is determined by the distance between the attachment points on the case lugs. It is essential to verify this dimension before purchasing an aftermarket strap to ensure perfect compatibility.

Which strap is recommended for this Eterna model?

The Eterna Adventure 1222.41.41.0217 pairs excellently with Italian alligator leather straps (for a more refined style), calf leather with a worked grain (for a sporty-elegant profile), NATO fabric (for tactical applications), or natural vulcanised rubber (for outdoor and humid conditions). Your choice depends on the primary use and the context in which you wear the timepiece.

How do you change the strap on the Eterna Adventure 1222.41.41.0217?

The strap is changed using a specialised tool called a spring bar tool. Locate the pins that connect the strap to the case lugs; insert the spring bar tool's lever to compress the pin and slide out the strap. Once removed, insert the new strap by aligning the pins and ensuring the terminals are perfectly anchored. If you lack confidence, consult a professional watchmaker.

Are aftermarket straps compatible with the Eterna Adventure 1222.41.41.0217?

Yes, any strap with a 20mm lug width is compatible with this model. Milano Straps offers a wide range of artisanal 20mm straps, both in fine leather (alligator, calf) and technical materials (NATO, rubber). The key is always verifying that the lug width is precisely 20mm to avoid slippage or damage to the lugs.

How long does a leather strap last on a watch like the Eterna Adventure?

The lifespan of a leather strap depends on usage, storage, and material quality. A high-quality alligator or calf strap, worn regularly but not daily in the same hole, can last 5-10 years. Exposure to sunlight, perspiration, and humidity accelerates ageing. Vegetable-tanned leather typically lasts slightly less than synthetically treated leather but develops a noble patina over time.