Strap for Essence Automatic Chronometer Dégradé / Calf

The lug width of the Formex Essence 0330.1.6324.713 is 22mm. This measurement refers to the distance between the two lateral pins of the case upon which the strap rests. To verify it correctly, measure the precise gap between the metal axes: it should be exactly 22mm. This dimension allows the use of a wide selection of artisanal straps, from leather models to NATO straps to FKM rubber straps.

For the Essence 0330.1.6324.713 we recommend: (1) alligator in neutral tones (tobacco brown, black) for formal elegance; (2) vegetable-tanned calf for natural patina and ageing; (3) NATO strap in woven canvas for daily versatility and moisture protection; (4) FKM rubber with anti-slip surface for outdoor performance. Choice depends on actual use: professional or formal settings tend towards alligator, whilst sports use prefers NATO or rubber.

Strap change requires a specific tool: a spring bar extractor. Press the small lateral spring of the pin, which permits retraction, then extract the pin from the case. Repeat the operation on the opposite lug. Insert the new strap by aligning the holes with the case pins and reinsert the pins until they click. Never force: a correct operation is fluid. If you are inexperienced, entrust the task to a specialist watchmaker.

Yes, any strap constructed for 22mm lug width is compatible with the Formex Essence 0330.1.6324.713, provided it respects constructive specifications: straight pins (not domed pins) and total width of at least 120mm to ensure closure with deployant. Custom artisanal straps can be personalised in length, thickness and deployant finish to fit your anatomy and aesthetic preferences perfectly.

A quality leather strap (alligator or vegetable-tanned calf) maintains full functionality for 3-5 years of daily use, depending on climate, humidity and cleaning frequency. Tuscan vegetable-tanned calf develops natural protective patina that slows ageing. FKM rubber offers superior durability (7-10 years) in humid or outdoor environments. Woven NATO canvas resists 4-7 years. Regular maintenance (application of protective balm every 6 months for leather) significantly extends the useful life of the strap.