Technical Archive

H. Moser & Cie
Heritage 8341-0400— lug 20mm

H. Moser & Cie Heritage 8341-0400: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Heritage Perpetual Calendar

Artisanal Note

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

Technical Specifications

H. Moser & Cie 8341-0400
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

8341-0400

Movement

H. Moser & Cie caliber HMC 341 Hours, Minutes, Day / Night Indication, Small Seconds | Leap Year, Month, Perpetual Calendar, Big Date | Power Reserve Indicator

The Heritage

The H. Moser & Cie Heritage 8341-0400 features a 46 mm red gold case housing the proprietary HMC 341 caliber with perpetual calendar, big date, day/night indicator, small seconds, and power reserve display. The 20 mm lug width requires precise strap selection. The fumé dial and refined aesthetic reflect independent Swiss watchmaking philosophy without visible logos.

FAQ

What is the lug width of the H. Moser & Cie Heritage 8341-0400?

The H. Moser & Cie Heritage 8341-0400 features a lug width of 20 millimetres. This measurement is essential for selecting the correct strap: an incompatible width will either fail to fit into the lugs or cause instability. To measure accurately, place a calliper between the two lug terminals at their narrowest point.

Which strap is most suitable for the H. Moser & Cie Heritage 8341-0400?

We recommend alligator straps with fine grain texture, vegetable-tanned calf leather, or shell cordovan in cognac, tobacco warm tones, or natural aged finishes. These coordinate elegantly with the smoked dial. For practicality, a NATO in sand beige or navy blue maintains the Heritage aesthetic. Sophisticated grey rubber offers a versatile daily alternative.

How do I change the strap on this model?

Use a spring bar tool for this procedure. Position the watch horizontally, insert the flat end of the tool into the spring bar slot, and lift gently until the pin releases. Repeat on the opposite side. Insert the new spring bars through the lug holes and ensure the spring mechanism closes with a slight tug. For non-standard integrated lugs, consult Atelier Casati Milano for bespoke modifications.

Can I use aftermarket-compatible straps with the 8341-0400?

Yes, provided the lug width is exactly 20 millimetres. Milano Straps offers a comprehensive collection of artisan-crafted 20mm straps designed for luxury watches. All our straps are produced from premium materials—alligator, calf, cordovan—and can be customized. Always verify specifications before ordering.

What is the average lifespan of a leather strap for this watch?

A high-quality leather strap (alligator, calf, cordovan) typically lasts 3–5 years under regular use, depending on climate, frequency, and maintenance. Vegetable-tanned leather ages beautifully, developing a noble patina. Shell cordovan, being denser and more resilient, often lasts 7–10 years or longer. Periodic maintenance with protective creams significantly extends longevity.