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Czapek

Antarctique

Caliber
SXH5

Not a ranking. Darker means more of the work is done inside the brand.

Evidence by dimension

MA 4Movement architecture: Proprietary caliber developed for brand; substantial external engineering possible

The SXH5 was designed from scratch by Czapek's own constructor, a proprietary caliber whose parts are made by partners ("designed in-house, made by partners"). Level 5 is arguable since the engineering is internal; it is held at 4 until the scope of partner engineering is known.

Supporting evidence (1)

The SXH5 was designed from scratch by Czapek's constructor, Dan Martinez.

It was conceived from scratch by the brand's constructor Dan Martinez

The Czapek Antarctique, the Brand's First Luxury Sports Watch (Xavier Markl, Monochrome)Secondary source, pressArchived copyChecked 13 Oct 2026Added by ai-draft

In-house design.

Context (1)

The SXH5 is described as the brand's first in-house movement.

the brand's first in-house movement

The Czapek Antarctique, the Brand's First Luxury Sports Watch (Xavier Markl, Monochrome)Secondary source, pressArchived copyChecked 13 Oct 2026Added by ai-draft

Marketing term; the design claim above carries the score.

MM 0Movement manufacturing: Complete movement external

The movement parts are made by named partners, and no part is documented as made by Czapek.

Supporting evidence (1)

SXH5 parts are made by partners including AB Product, Générale Ressorts and Atokalpa.

with parts manufactured by several partners: AB product, Générale de resort or Atokalpa

The Czapek Antarctique, the Brand's First Luxury Sports Watch (Xavier Markl, Monochrome)Secondary source, pressArchived copyChecked 13 Oct 2026Added by ai-draft

External parts manufacture.

Context (1)

Before the SXH5, Czapek made its movements with Chronode.

Until now, Czapek has been manufacturing its movements with Chronode

The Czapek Antarctique, the Brand's First Luxury Sports Watch (Xavier Markl, Monochrome)Secondary source, pressArchived copyChecked 13 Oct 2026Added by ai-draft

Earlier calibers were also made with a partner.

EX UExterior manufacturing: Unknown

No source names the case or bracelet maker. U until found (handbook score was 0).

DH 0Dial & hands manufacturing: Dial and hands external

The dial is made by Metalem.

Supporting evidence (1)

The dial is made by Metalem in Le Locle.

The dial of the Czapek Antarctique is made by Metalem (a Le Locle-based dial maker and long-standing Czapek partner).

The Czapek Antarctique, the Brand's First Luxury Sports Watch (Xavier Markl, Monochrome)Secondary source, pressArchived copyChecked 13 Oct 2026Added by ai-draft

External dial maker.

CF UCraft & finishing: Unknown

The movement is hand-finished, but no source says whether Czapek or a partner does it. U (handbook score was 3).

Context (1)

The movement has hand-chamfered inward angles and drawn flanks.

It is modern but elaborate with hand chamfering of the inward angles and drawing of the flanks.

The Czapek Antarctique, the Brand's First Luxury Sports Watch (Xavier Markl, Monochrome)Secondary source, pressArchived copyChecked 13 Oct 2026Added by ai-draft

Finishing exists; performer unknown.

WE 4Watchmaking execution: Deep movement assembly, complication work and adjustment

A Czapek watchmaker assembled the SXH5 prototype, and the movement is presented as assembled in-house. Series assembly and adjustment are not described directly.

Supporting evidence (1)

A Czapek watchmaker assembled the first Antarctique prototype.

Czapek's watchmaker, Julian, assembling the first Antarctique prototype, equipped with the calibre SXH5.

The Czapek Antarctique, the Brand's First Luxury Sports Watch (Xavier Markl, Monochrome)Secondary source, pressArchived copyChecked 13 Oct 2026Added by ai-draft

In-house assembly of the movement.

PD 5Product development: Deep original engineering or invention defining the watch

Czapek conceived the caliber from scratch and directs a network of specialist suppliers.

Supporting evidence (2)

The SXH5 was designed from scratch by Czapek's constructor, Dan Martinez.

It was conceived from scratch by the brand's constructor Dan Martinez

The Czapek Antarctique, the Brand's First Luxury Sports Watch (Xavier Markl, Monochrome)Secondary source, pressArchived copyChecked 13 Oct 2026Added by ai-draft

Original engineering.

SXH5 parts are made by partners including AB Product, Générale Ressorts and Atokalpa.

with parts manufactured by several partners: AB product, Générale de resort or Atokalpa

The Czapek Antarctique, the Brand's First Luxury Sports Watch (Xavier Markl, Monochrome)Secondary source, pressArchived copyChecked 13 Oct 2026Added by ai-draft

Supplier direction.

Who makes what

AreaComponentMade byRelationship
Movement architectureCaliber SXH5 designCzapekInternal
Movement manufacturingMovement partsAB ProductExternal specialist
Movement manufacturingMovement partsGénérale RessortsExternal specialist
Movement manufacturingMovement partsAtokalpaExternal specialist
Exterior manufacturingCase and integrated braceletUnknownUnknown
Dial & hands manufacturingDialMetalemExternal specialist
Craft & finishingMovement hand finishingUnknownUnknown
Watchmaking executionAssemblyCzapekInternal

History

  1. Version 2 13 Oct 2026, mikeqtn

    First evidenced profile. Proposed: MM 1 → 0 (all parts made by named partners), EX 0 → U and CF 3 → U (no source on the case maker or on who finishes the movement). Confidence A → B: one 2020 secondary article; the maker page no longer covers the SXH5. Reviewed and approved by mikeqtn on 2026-10-14.

    Changed from version 1: MM 1 → 0, EX 0 → U, CF 3 → U, evidence A → B.

    Compare with version 1
    Version 1 and version 2
    Version 1Version 2
    MA4 of 5, Version 14 of 5, Version 2Movement architecture
    MM1 of 5, Version 10 of 5, Version 2Movement manufacturing changed
    EX0 of 5, Version 1U unknown, Version 2Exterior manufacturing changed
    DH0 of 5, Version 10 of 5, Version 2Dial & hands manufacturing
    CF3 of 5, Version 1U unknown, Version 2Craft & finishing changed
    WE4 of 5, Version 14 of 5, Version 2Watchmaking execution
    PD5 of 5, Version 15 of 5, Version 2Product development
  2. Version 1 13 Oct 2026, FALK v0.2 handbook (superseded)

    Imported from the FALK Index v0.2 handbook §8 reference dataset.

Use this record

Handbook v0.2 §8 lists this record as "Czapek — Antarctique SXH5". The handbook source (czapek.com/new-antarctique) no longer mentions the SXH5; evidence comes from Monochrome's 2020 launch article.