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The Index — Vintage watches, decoded.References, dials and variants up to 2000

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Zenith Defy 03.A3642.670/75.M3642 · The Index

Brands
Zenith
Defy
03.A3642.670/75.M3642

Defy 03.A3642.670/75.M3642

c. 2022–c. 2026

Years estimated from 6 dated marketplace listings; seller-stated, unverified. Listings also state years up to 2026; end of production left open.

Defy A3642 Revival — photo from WatchBase · Photo: WatchBase · © WatchBase, used with permission · Source: https://watchbase.com/zenith/revival/03-a3642-670-75-m3642

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Variants

No variants documented yet.

Reference specifications

Brand: Zenith
Model: Defy
Reference: 03.A3642.670/75.M3642
Production: c. 2022–c. 2026
Case material: Stainless steel
Case diameter: 37 mm
Water resistance: 300 m
Crystal: Sapphire

Specs shared by all variants. Variant pages show where a variant differs.

All Defy references

Previous referenceA7682