Formex · Essence
Strap for Essence Automatic Chronometer Brown / Calf
The Essence Automatic Chronometer Brown / Calf takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
What I'm asked about the Formex Essence 0330.1.6351.722
What strap size does the Formex Essence 0330.1.6351.722 take?
The Formex Essence 0330.1.6351.722 needs 22 mm between the lugs, usually 18 or 20 mm at the buckle. It's the size I've been fitting on it for years.
Can the strap on the Formex Essence 0330.1.6351.722 be changed?
Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.
Can I put a leather strap on the Formex Essence 0330.1.6351.722?
Yes, in 22 mm leather. On a 43 mm case a calf strap works every day; if you want something more, alligator.
Which strap do you recommend for the Formex Essence 0330.1.6351.722?
A 22 mm calf strap, for every day. You'll find it ready in the 22 mm collection. If you'd rather have something built on your wrist, the Casati atelier.
Straps for the Essence 0330.1.6351.722
Selected for the 22 mm lug width · workshop selection
Hammered calfskin strap in cuoio€98
Brown Italian Leather Military Strap€80
Apple Watch Saffiano Leather Strap Blue€105
Black Saffiano Rubber Strap€105
Grand Cavalier Military Brown Leather Strap€120
The Essence 0330.1.6351.722, seen from the bench
Frequently asked questions
What is the exact lug width of the Formex Essence 0330.1.6351.722?
The lug width of the Formex Essence 0330.1.6351.722 is 22mm. This standard measurement allows you to fit a wide selection of artisanal aftermarket straps in leather, fabric or elastomer, whilst maintaining balanced visual proportions relative to the 43mm case.
Which strap type is recommended for the Formex Essence 0330.1.6351.722?
For the 0330.1.6351.722 we recommend vegetable-tanned alligator straps for maximum elegance, aniline calf for softness and aged patina, cotton NATO for functional simplicity, or FKM rubber for humid and marine environments. Choice depends on primary use: formal, daily or extreme.
How do I change the strap on the Formex Essence 0330.1.6351.722?
The process is straightforward: use a spring bar removal tool to gently push the pin from the opposite direction to the opening you wish to adjust. Insert the new strap under the pin and allow it to return to position. Verify the pin is fully seated before wearing the watch.
Can I fit any 22mm strap onto the Formex Essence 0330.1.6351.722?
Technically yes, all straps with 22mm lug width are compatible. However, we recommend evaluating thickness: high-quality vegetable-tanned leather straps (2-3mm) maintain optimal proportions with the case, whereas some budget NATO fabrics may appear visually heavy.
How long does a leather strap last on the Formex Essence 0330.1.6351.722?
A high-quality vegetable-tanned leather strap lasts 2–4 years of intense daily use, up to 6–8 years with rotation and conscious maintenance. The patina that develops is a positive aesthetic characteristic. Elastomer (rubber) lasts 5–7 years. Longevity depends on sun exposure, humidity and cleaning frequency.
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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
The atelier's website: casatimilano.com