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Eterna · Adventure

Strap for Royal KonTiki GMT Silver

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

22mm
22 mm strapsAll Eterna
Lug width22 mm
Case diameter42 mm
Reference7740.40.11.1289
FamilyAdventure
MovementEterna caliber 3945A hours, minutes, Additional 24 hours Hand (adjustable), seconds | date
Year2013
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

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Straps for the Adventure 7740.40.11.1289

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Adventure 7740.40.11.1289, seen from the bench

The Eterna Adventure reference 7740.40.11.1289 is powered by the automatic caliber 3945A with hour, minute, second and GMT indication via an adjustable 24-hour hand. The movement includes a date complication. The GMT function allows the simultaneous reading of two different time zones.

Frequently asked questions

What is the exact lug width of the Eterna Adventure 7740.40.11.1289?

The lug width of the 7740.40.11.1289 is 22mm. This measurement is critical for the visual balance of the 42.30mm stainless steel case and represents the only dimension compatible with the integrated lugs of this model.

Which strap is recommended for the Eterna Adventure 7740.40.11.1289?

Four primary categories are recommended for the 7740.40.11.1289: alligator for maximum aesthetic refinement, vegetable-tanned calf leather for natural ageing, NATO for sporting functionality, and rubber for moisture resistance. Your choice depends on the balance desired between elegance and practicality.

How do I change the strap on the Eterna Adventure 7740.40.11.1289?

The 7740.40.11.1289 features integrated lugs on the case. To replace the strap, use a spring bar tool to push the pins from the ends and insert new pins into the attachment holes. This operation requires precision to avoid scratches on the case.

Are 22mm aftermarket straps compatible with the 7740.40.11.1289?

Yes, any strap with a 22mm lug width is compatible with the 7740.40.11.1289. Compatibility is determined solely by lug width: 22mm for this model. Bespoke artisanal straps, crafted to measure, guarantee perfect fit to the integrated lugs.

What is the expected lifespan of a leather strap for the 7740.40.11.1289?

A high-quality leather strap, vegetable-tanned, maintains structural integrity for 3-5 years of daily wear. Lifespan depends on exposure to moisture, perspiration, and flexing cycles at the wrist. Regular maintenance with specific balms significantly extends strap longevity.

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