Caliber: R AL
link 27 PSFunctions: Hours, minutes, minute repeater with two classic gongs, 12-hour alarm, chiming mode indication in aperture, small secondsDiameter: 30mmThickness: 8.23mmPower Reserve: 43 hours minimum and 48 hours maximumWinding: Self-windingFrequency: 3HzAdditional Details: Rhodium-plated 22K gold off-center mini
link rotor with yellow gold edges,
link hand-engraved with Mr. Philippe Stern's signature