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Multifort (1934 original) vs Multifort (modern Caliber 80)

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Specification
Production1934
EraPre-war and mid-centuryModern Swatch Group production
Statusdiscontinuedcurrent
Case materialSteel, gold-plated and solid gold executionsStainless steel
CrystalAcrylic on most survivorsSapphire
CrownAquadura cork-sealed crown on the water-resistant executions
Caseback typeExhibition caseback on most executions
MovementAutomaticAutomatic
CaliberMido Caliber 80
ManufacturerMidoETA (Swatch Group) for Mido
Windingautomaticautomatic
Power reserve80 hours
Frequency21,600 vph
ComplicationsDate; day-date on some executions