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Exact reference

Longines Ultra-Chron Carbon

L2.839.4.52.2 Historical / catalogued

Exact Fiduchron published execution

Case

Dimensions and fit

direct
Case length43 mm
Case width / diameter43 mm
Case thickness14 mm
Lug-to-lug48.9 mm
Lug widthNot recorded
Water resistanceNot recorded

The dimension basis is not currently recorded.

Open dimension source ↗
Movement

Calibre and mechanism

Automatic
CalibreLongines L836.6
Normalized calibreLONGINESL8366
GenerationLongines L836.6
Power reserve52 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.