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Exact reference

Breitling Premier Heritage B21 Chronograph Tourbillon Gaston Breitling

JB2120A61B1P1 Unknown
Case

Dimensions and fit

direct
Case length42 mm
Case width / diameter42 mm
Case thickness15.3 mm
Lug-to-lugNot recorded
Lug widthNot recorded
Water resistanceNot recorded

The dimension basis is not currently recorded.

Open dimension source ↗
Movement

Calibre and mechanism

Automatic
CalibreCaliber B21
Normalized calibreCALIBERB21
GenerationNot recorded
Power reserve55 h
Open movement source ↗
Technical data

Conventional winding

Linked to sourced calibre programme
ApplicabilityYes
DirectionCW
TPD minimum800
TPD target800
TPD maximum800

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

Open winding source ↗
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.