LANGE 31
in 18-carat white gold
Reference 130.039F
The LANGE 31 is the world’s first mechanical wristwatch with a power reserve of 31 days and a patented constant-force escapement. The white-gold model has a grey dial made of solid silver. Limited to 100 pieces, this model is available exclusively in Lange boutiques.
Technical Details
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Case dimensionCase diameter: 45.9 mm
Case thickness: 15.9 mmWinding mechanismManually wound movementPower reserve744 hoursComplicationsOutsize date, constant-force escapement, power-reserve indicator -
Reference130.039F / LSLS1303ACLimited100 piecesDial colourGrey
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Case material18-carat white gold
Case back: sapphire glassCase dimensionCase diameter: 45.9 mm
Case thickness: 15.9 mmWater resistance3 bar -
Movement designationL034.1Number of movement parts406Winding mechanismManually wound movementPower reserve744 hoursBalance frequency21,600 semi-oscillations per hour (3.0 Hz)ComplicationsOutsize date, constant-force escapement, power-reserve indicator
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Leather StrapBrown, Alligator leatherOur alligator straps fully comply with the CITES regulations: Species – alligator mississippiensis. Extraction method – farmed. CITES Appendix – Appendix IIDeployant buckle18-carat white gold
