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Exact reference

Longines Spirit Flyback 42 Stainless Steel / Black / Strap

L3.821.4.53.2 Historical / catalogued

Exact Fiduchron published execution

Case

Dimensions and fit

direct
Case length42 mm
Case width / diameter42 mm
Case thickness17 mm
Lug-to-lug49.5 mm
Lug widthNot recorded
Water resistanceNot recorded

The dimension basis is not currently recorded.

Open dimension source ↗
Movement

Calibre and mechanism

Automatic
CalibreL791
Normalized calibreL791
GenerationLongines automatic L791
Power reserve68 h
Open movement source ↗
Technical data

Conventional winding

Calibre resolved; winding programme unresolved
ApplicabilityRequired
DirectionNot recorded
TPD minimumNot recorded
TPD targetNot recorded
TPD maximumNot recorded

Conventional winding fields are evidence-linked reference data. They are separate from any device-specific axial-control profile.

Market context

Market-value disposition

Date not recorded

No exact-reference public market estimate has been admitted for this record.

Market observations are separate from manufacturer specifications and are not used to fill technical gaps.