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Caliber: Vacheron Constantin 1142Functions: Time; link chronograph with 30 minute link registerDiameter: 27.50mmThickness: 5.57mmPower Reserve: 48 hoursWinding: ManualFrequency: 21,600 vphJewels: 21Additional Details: Horizontal clutch, column wheel link controlled; hand-finished with flanks polished and edges beveled on plates and bridges; decorated with circular graining on the dial side and Côtes de Geneve on the back; Geneva Seal