Formex · Essence
Strap for Formex Essence 0330.4.6399.910
The Essence Leggera Automatic Chronometer Forged Carbon / Rubber takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
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- 12-month warranty on manufacturing defects
- Hand-stitched in Milan
Lug width

Straps for the Essence 0330.4.6399.910
Selected for the 22 mm lug width · workshop selection
What length do I need?
Measure your wrist with a tailor's tape or a piece of string, comfortably snug.
| Wrist circumference | Length (long side / short side) |
|---|---|
| 15.0–16.4 cm | 120 / 70 mm |
| 16.5–17.8 cm | 125 / 75 mm |
| 17.9–19.0 cm | 130 / 80 mm |
| 19.1–20.3 cm | 135 / 85 mm |
| 20.4–21.6 cm | 140 / 85 mm |
| 21.7–22.9 cm | 145 / 90 mm |
The ready-to-wear strap is 115 × 75 mm. For a smaller or larger wrist I make it in the right length: order your length.
What I'm asked about the Formex Essence 0330.4.6399.910
What strap size does the Formex Essence 0330.4.6399.910 take?
The Formex Essence 0330.4.6399.910 needs 22 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Formex Essence 0330.4.6399.910 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 0330.4.6399.910?
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 0330.4.6399.910?
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.
More Essence
- Essence Automatic Chronometer Black / Bracelet22 mm
- Essence Automatic Chronometer Black / Croco22 mm
- Essence Automatic Chronometer Black / Calf22 mm
- Essence Automatic Chronometer Black / Calf22 mm
- Essence Automatic Chronometer Black / Rubber22 mm
- Essence Automatic Chronometer Dégradé / Bracelet22 mm
- Essence Automatic Chronometer Dégradé / Croco22 mm
- Essence Automatic Chronometer Dégradé / Calf22 mm
All Essence → Formex families →
Every Essence reference with its measured lug width, on watchbands.ai →
For changing the strap
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





