Oris 733 (Sellita SW200-1 base)

Oris' standard automatic caliber based on the Sellita SW200-1, used across the Aquis, Big Crown, and Divers Sixty-Five collections. Oris applies their own decoration and regulation standards to the proven SW200 platform. The red rotor has become an iconic Oris signature visible through exhibition casebacks. Represents Oris' reliable everyday caliber before the brand introduced its own in-house movements.