H. Moser & Cie · Endeavour

Strap for Endeavour Small Seconds, Rose Gold, Black Dial

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

Lug width20 mm
Case diameter39 mm
Reference1321-0101
FamilyEndeavour
MovementH. Moser & Cie caliber HMC 321 hours, minutes, small seconds | power reserve indicator
CaseRose Gold

Spring bar

Swiss Standard universal spring bars

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

Straps for the Endeavour 1321-0101

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Endeavour 1321-0101, seen from the bench

The Endeavour by H. Moser & Cie is powered by the in-house caliber HMC 321 with hour, minute, small second and power reserve indications. The movement offers essential functions with the characteristic integrated power reserve display on the dial. The reference 1321-0101 represents the brand's technical approach to the power reserve complication.

Frequently asked questions

What is the lug width of the H. Moser & Cie Endeavour 1321-0101?

The lug width of the H. Moser & Cie Endeavour 1321-0101 is 20mm. This measurement is critical when selecting a compatible strap: an undersized lug creates a gap between the strap and the case, whilst an oversized lug compromises visual alignment and fastening security. It is recommended to verify the measurement using a digital calliper, positioning it perpendicularly to the lug and measuring its internal width.

Which strap do you recommend for the Endeavour 1321-0101?

For the H. Moser & Cie Endeavour 1321-0101 in rose gold, we strongly recommend alligator in dark brown, mahogany or cognac tones: the natural grain dialogues elegantly with rose gold and the alligator's patina evolves over time, mirroring the natural oxidation of the case. An equally high-quality alternative is vegetable-tanned calf leather in neutral colours. For daily sporting use, a high-density NATO maintains versatility. FKM rubber remains a marginal option, unless from specialised manufacturers offering sophisticated finishes.

How do I change the strap on the Endeavour 1321-0101?

The Endeavour 1321-0101 features an integrated bracelet: the strap attaches via spring bars (transverse metal bars) inserted into the case's lateral attachment points. Using a watch tool with two different-sized tips, gently push the bar downward to disengage it from the lug. Insert the new strap by aligning the spring bar horizontally and push until fully engaged. This is a straightforward operation but requires caution to avoid damaging the lacquered lugs.

Can I use an aftermarket strap on this model?

Yes, high-quality aftermarket straps are perfectly compatible with the H. Moser & Cie Endeavour 1321-0101, provided the lug width is exactly 20mm and the spring bars are of correct dimensions (diameter and length). We recommend verifying technical specifications with the supplier before purchase. Artisanal high-quality straps guarantee precise compatibility and superior materials compared to generic aftermarket OEM options.

How long does a leather strap last before deterioration?

The durability of a leather strap depends on material quality, usage patterns and maintenance. A high-quality vegetable-tanned alligator strap, with moderate daily wear, maintains structural integrity for 5-7 years before showing significant wear signs (cracking, flaking). Exposure to moisture, perspiration and UV radiation accelerates deterioration. Natural patina emerges after 6-12 months. We recommend rotating straps, air-drying them after water exposure and applying natural conditioners (linseed oil) every 12-18 months to extend lifespan.

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