This is a Citizen pendant watch designed for traditional Japanese attire. Its small 29mm diameter makes it a perfect match. Silver and gold inlay  chrysanthemum pattern.

For traditional Japanese clothing . It comes with a braided cord and can be tucked into a kimono obi (sash).

New battery installed. Citizen inspection sticker still on the case. Plastic protector still on cord. Because of that it's being classified as New Old Stock (NOS)