Strap for Essence Automatic Chronometer Silver / Calf

The lug width of the Formex Essence 0330.1.6341.713 is 22mm. This measurement refers to the distance between the two spring bars that attach the strap to the case lugs. To verify compatibility, measure the internal spacing of your case attachments: 22mm is the precise specification required.

For the Formex Essence, we recommend a vegetable-tanned calf leather strap in Havana tone, which balances warm chromatics and daily versatility. Alternatively, alligator for formal occasions or a nylon NATO strap for practical everyday wear. All materials are compatible with the 22mm lug attachment.

Strap replacement involves removing the lateral spring bars that secure the original strap to the case. Using a spring bar tool, apply gentle downward pressure on each spring bar to release it from the lug holes. Once removed, insert the new strap by aligning the spring bars with the holes, pressing until you hear the click of engagement. The operation requires care to avoid scratching the case.

Yes, any strap with a 22mm lug width is compatible with the Formex Essence. Milano Straps offers a curated selection of artisanal straps in leather, NATO, and rubber, all sized to 22mm and selected for visual harmony with this case.

A quality calf leather strap with vegetable tanning typically lasts 3-5 years under daily wear, with variation depending on personal perspiration and climate. Natural patina develops within the first few months, while wear accelerates after the third year. Proper maintenance—periodic cleaning and drying—significantly extends longevity.