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Zenith · El Primero

Strap for Zenith El Primero 03.2046.4002/25.C771

The El Primero Chronomaster 42 Stainless Steel / Anthracite / Calf / Classic Cars takes 20 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

20mm
20 mm strapsAll Zenith
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Lug width20 mm
Case diameter42 mm
Reference03.2046.4002/25.C771
FamilyEl Primero
MovementZenith caliber El Primero 400B Hours, Minutes, Small seconds | Date | Chronograph, Column wheel
Year2016 - 2021
Water resistance100

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Standard spring bar · length 20 mm · Ø 1.8 mm double flange

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El Primero Chronomaster 42 Stainless Steel / Anthracite / Calf / Classic Cars — watch

Straps for the El Primero 03.2046.4002/25.C771

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

What length do I need?

Measure your wrist with a tailor's tape or a piece of string, comfortably snug.

Wrist circumferenceLength (long side / short side)
15.0–16.4 cm110 / 70 mm
16.5–17.8 cm115 / 75 mm
17.9–19.0 cm120 / 80 mm
19.1–20.4 cm125 / 80 mm
20.5–21.6 cm130 / 85 mm
21.7–22.9 cm135 / 85 mm
over 22.9 cmon request

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 Zenith El Primero 03.2046.4002/25.C771

What strap size does the Zenith El Primero 03.2046.4002/25.C771 take?

The Zenith El Primero 03.2046.4002/25.C771 needs 20 mm between the lugs. It's the size I've been fitting on it for years.

Can the strap on the Zenith El Primero 03.2046.4002/25.C771 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 Zenith El Primero 03.2046.4002/25.C771?

Yes, in 20 mm leather. On a 42 mm chronograph I like box calf: it holds its shape and carries a substantial case.

Which strap do you recommend for the Zenith El Primero 03.2046.4002/25.C771?

A 20 mm box calf. You'll find it ready in the 20 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

For changing the strap

Classic Strap and Bracelet Removal Tooltwo-tip spring bar tool→Milano Straps Premium Swiss Standard Watch Bucklestang buckle, steel or PVD→Leather Conditioner Milano Strapsnourishes and protects the strap→Casati Milano Rectangular Epsom Leather Travel Case — Brownfor the watch and spare straps→

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

Updated on · by Antonio Zichichi