Knowledge Center

Professional Authentication Platform

TAG Heuer Calibre 5

Probable

Worth being precise about because the designation is a marketing label rather than a caliber identity: Calibre 5 has covered more than one outside base over its life, so it does not by itself tell an examiner what is inside the watch. The Isograph carbon-composite hairspring is a specific and checkable execution within it, and TAG Heuer's claims about it were revised after launch — which is recorded here as a reason to read the reference rather than the label.

Specifications

Movement manufacturer
TAG Heuer
Frequency
28,800 vph (4 Hz)
Winding
automatic
Complications
Centre seconds · Date

Architecture

TAG Heuer's designation for a three-hand automatic with date, supplied on outside bases. The Isograph execution carries a carbon-composite hairspring.

Open questions

OpenMovement assignmentMedium

Which references carried which Calibre 5 base

Which outside movement bases has TAG Heuer sold under the Calibre 5 designation, and which reference carries which?

Scope Consequential because the designation is a label rather than a caliber identity. Without a mapping an examiner cannot state what should be inside a Calibre 5 watch, which means the movement — normally the most informative part — establishes very little on these references.

References using this caliber

Provenance of this record

Sources & Evidence

Primary sourceManufacturer documentation

TAG Heuer — collection and manufacture caliber specifications

TAG Heuer SA

Accessed
2026-08-18

Cited for

This referenceHigh confidence
View source
Secondary sourceCollector research

Heuer collector research on reference numbering, dial generations and executions

Collector communities and specialist dealers

Accessed
2026-08-18

Cited for

This referenceProbable

Last verified: Not yet reviewed